Decimals

Problem 801

Solve using the standard algorithm: $1.8 - 0.9 =$

See Solution

Problem 802

Calculate $5.182 - 0.09$ .

See Solution

Problem 803

Calculate $341.84 - 21.92$ .

See Solution

Problem 804

Average monthly snowfall in King Salmon, Alaska, is $45.9 \text{ inches} \div 7 \text{ months}$ . Why is this reasonable?

See Solution

Problem 805

What was the hourly labor cost if Serenity paid $\$ 309.50$ total, with $\$ 62$ for parts and 4.5 hours of work?

See Solution

Problem 806

A store owner has 57.4 pounds of candy. If he divides it into 7 boxes, how many pounds will each box contain?

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Problem 807

Divide 9.13 by 0.58 and round the answer to the nearest hundredth.

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Problem 808

John worked 5.9 hours daily for 5 days. Calculate the total hours worked: $5.9 \times 5$ .

See Solution

Problem 809

Lisa spent \$8.74 on grapes at \$0.76 per pound. How many pounds did she buy?

See Solution

Problem 810

Each kitten's weight after gaining 2.3 ounces: initial weights were 3.6, 4.2, and 3.3 ounces. Find final weights.

See Solution

Problem 811

Is Jaime's calculation of $4.4 - 0.33 = 1.1$ reasonable? Explain your reasoning.

See Solution

Problem 812

Calculate the product of 2.01 and 0.43: $2.01 \times 0.43$ .

See Solution

Problem 813

Convert 0.000000783 to scientific notation.

See Solution

Problem 814

Convert $19.2 \times 10^{8}$ minutes to hours.

See Solution

Problem 815

Convert $19.2 \times 10^{8}$ minutes to hours.

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Problem 816

Convert $6.16 \times 10^{6}$ to standard form.

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Problem 817

Convert the number 0.00037 into scientific notation.

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Problem 818

What is the standard form of the number $6.14 \times 10^{-9}$ ? Drag the answer into the box.

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Problem 819

Calculate $275.75 - 113.5 + 36.125$ and round to the correct significant figures.

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Problem 820

Find the sum of $9.245 + 3.5725$ and round to the correct significant figures.

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Problem 821

Calculate the sum of $5.295 + 33.75 + 2.12$ and express your answer with the correct significant figures.

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Problem 822

Calculate $450 / 950.20$ and round to the correct number of significant figures using the division rule.

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Problem 823

Calculate $0.505 \div 0.2$ and round your answer to the correct number of significant figures.

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Problem 824

Calculate $3.25 \times 10^{-2} + 3.572 \times 10^{-3} + 6.125 \times 10^{-1}$ and round to the correct significant figures.

See Solution

Problem 825

Determine the number of significant figures in the number $2.005 \times 10^{-9}$ .

See Solution

Problem 826

Count the significant figures in the number $0.070020$ .

See Solution

Problem 827

Count the significant figures in the number $1.00100$ .

See Solution

Problem 828

Estima el cociente. $28.3 \div 9$ A. 30 B. 10 C. 1 D. 3

See Solution

Problem 829

Estima el cociente. $4.81 \div 0.97$ 5 1 0 50

See Solution

Problem 830

Estima el cociente redondeando cada número al número entero más cercano. $33.7 \div 9.5$
Escribe tu respuesta en el recuadro.

See Solution

Problem 831

$\left(7.01 \times 10^{3}\right)+\left(5.6 \times 10^{-1}\right)$
PLY YOUR SKILLS Find the number of second The speed of liaht is appro

See Solution

Problem 832

Calculate the total bill for a table with a ham sandwich, meatball hoagie, fries, iced tea, and lemonade.

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Problem 833

You drive 1,820 miles for 36 hours, earning \$0.60 per mile. How much will you earn? Options: A. \$21.60 B. \$1,092.00 C. \$2,092.00 D. \$10,920.00 F. \$65,520.00

See Solution

Problem 834

Calculate: $78.084 \frac{\mathrm{mol}}{\mathrm{L}} \times 42 \mathrm{L}$ , $7.8084 \frac{\mathrm{mol}}{\mathrm{L}} \times 0.9 \mathrm{L}$ , and $626.45 \mathrm{mol} \div 34.3 \mathrm{L}$ .

See Solution

Problem 835

Calculate the following: $78.084 \frac{\mathrm{mol}}{\mathrm{L}} \times 42 \mathrm{L}$ , $7.8084 \frac{\mathrm{mol}}{\mathrm{L}} \times 0.9 \mathrm{L}$ , and $626.45 \mathrm{mol} \div 34.3 \mathrm{L}$ .

See Solution

Problem 836

Calculate the total cost to pave a 2-mile, 20-foot-wide road at \$23.35 per linear foot.

See Solution

Problem 837

Multiply or divide these measurements, ensuring answers have correct significant digits:
1. $20.947 \frac{\mathrm{g}}{\mathrm{mL}} \times 25 \mathrm{mL} = \square \mathrm{g}$
2. $996.90 \mathrm{mol} \div 33.96 \mathrm{L} = \square \frac{\mathrm{mol}}{\mathrm{L}}$
3. $978.4 \mathrm{g} \div 0.53 \mathrm{mL} = \square \frac{\mathrm{g}}{\mathrm{mL}}$

See Solution

Problem 838

Calculate the following:
1) $78.08 \frac{\mathrm{mol}}{\mathrm{L}} \times 40 \mathrm{L} = \square \mathrm{mol}$
2) $0.93 \frac{\mathrm{mol}}{\mathrm{L}} \times 2.025 \mathrm{L} = \square \mathrm{mol}$
3) $599.25 \mathrm{m} \div 42.528 \mathrm{s} = \square \frac{\mathrm{m}}{\mathrm{s}}$

See Solution

Problem 839

Calculate the following: 15.707 g - 1.47 g, 6.727 g + 1.40 g, and 8.87 g - 0.600 g.

See Solution

Problem 840

Calculate the following: 8.627 mL + 1.77 mL = ?, 2.900 mL + 18.8 mL = ?, 15.82 mL - 0.577 mL = ?

See Solution

Problem 841

Calculate the following: 1) $10.970 \mathrm{~g}-1.17 \mathrm{~g}=$ ? 2) $3.907 \mathrm{~g}-1.57 \mathrm{~g}=$ ? 3) $17.50 \mathrm{~g}+0.7 \mathrm{~g}=$ ?

See Solution

Problem 842

Calculate the following: 15.527 g - 1.5 g = $\square$ g, 13.900 g + 0.87 g = $\square$ g, 1.920 g - 0.8 g = $\square$ g.

See Solution

Problem 843

Multiply or divide these measurements:
1. $78.08 \frac{\mathrm{mol}}{\mathrm{L}} \times 40 \mathrm{L} = \square \mathrm{mol}$
2. $0.93 \frac{\mathrm{mol}}{\mathrm{L}} \times 2.025 \mathrm{L} = \square \mathrm{mol}$
3. $599.25 \mathrm{m} \div 42.528 \mathrm{s} = \square \frac{\mathrm{m}}{\mathrm{s}}$

See Solution

Problem 844

Calculate the following: $15.700 \mathrm{~mL}-13.80 \mathrm{~mL}=\square \mathrm{mL}$ , $8.70 \mathrm{~mL}+17.6 \mathrm{~mL}=\square \mathrm{mL}$ , $16.920 \mathrm{~mL}+0.5 \mathrm{~mL}=\square \mathrm{mL}$ .

See Solution

Problem 845

Add or subtract these measurements, ensuring the correct significant digits:
8.70 mL - 7.8 mL = \square mL 17.570 mL + 18.8 mL = \square mL 11.9 mL + 13.577 mL = \square mL

See Solution

Problem 846

Add or subtract these measurements, ensuring the correct significant digits:
8.700 g + 1.37 g = \square g 16.600 g - 0.70 g = \square g 7.827 g - 1.2 g = \square g

See Solution

Problem 847

Calculate the following volumes: 1) $7.57 \mathrm{~mL} + 11.7 \mathrm{~mL} = \square \mathrm{mL}$ 2) $19.5 \mathrm{~mL} + 9.977 \mathrm{~mL} = \square \mathrm{mL}$ 3) $17.500 \mathrm{~mL} - 9.8 \mathrm{~mL} = \square \mathrm{mL}$

See Solution

Problem 848

Perform the following calculations with correct significant digits:
1. $2.800 \mathrm{~g}-1.47 \mathrm{~g}=\square \mathrm{g}$
2. $1.700 \mathrm{~g}-0.57 \mathrm{~g}=\square \mathrm{g}$
3. $14.700 \mathrm{~g}+1.3 \mathrm{~g}=\square \mathrm{g}$

See Solution

Problem 849

Calculate: 20.94 g/mL × 33 mL = ? g and 496.3 m ÷ 0.90 s = ? m/s.

See Solution

Problem 850

Multiply or divide these measurements, ensuring correct significant digits:
1. $2.094 \mathrm{~cm} \times 1.10 \mathrm{~cm} = \square \mathrm{cm}^{2}$
2. $20.94 \frac{\mathrm{g}}{\mathrm{mL}} \times 33 \mathrm{mL} = \square \mathrm{g}$
3. $496.3 \mathrm{~m} \div 0.90 \mathrm{~s} = \square \frac{\mathrm{m}}{\mathrm{s}}$

See Solution

Problem 851

Calculate the following: 78.08 cm × 50 cm = $\square$ cm², 792.4 g ÷ 43.37 mL = $\square$ g/mL, 0.93 g/mL × 4.925 mL = $\square$ g.

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Problem 852

Convert 5.0 miles/hour to meters/second. Show your work and express your answer as a decimal number. (6 pts)

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Problem 853

Convert fingernail growth of 2.50 cm/year to km/s. Show work and express answer in scientific notation. (6 pts)

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Problem 854

Multiply or divide these measurements, ensuring correct significant digits:
$2.09 \frac{\mathrm{mol}}{\mathrm{L}} \times 4.60 \mathrm{~L}=\square \mathrm{mol}$ ,
$20.9 \mathrm{~cm} \times 22 \mathrm{~cm}=\square \mathrm{cm}^{2}$ ,
$137.1 \mathrm{~g} \div 0.43 \mathrm{~mL}=\square \frac{\mathrm{g}}{\mathrm{mL}}$ .

See Solution

Problem 855

Multiply or divide these measurements with proper significant digits:
1. $20.947 \frac{\mathrm{g}}{\mathrm{mL}} \times 32 \mathrm{mL} = \square \mathrm{g}$
2. $914.4 \mathrm{g} \div 0.65 \mathrm{mL} = \square \frac{\mathrm{g}}{\mathrm{mL}}$
3. $0.934 \mathrm{cm} \times 1.125 \mathrm{cm} = \square \mathrm{cm}^{2}$

See Solution

Problem 856

Count the significant figures in 0.0157 kg. [Choose]

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Problem 857

Calculate the product of 3.15, 2.5, and 4.00 with the correct significant figures: $3.15 \times 2.5 \times 4.00 =$

See Solution

Problem 858

Find the result of $313.0 - (1.2 \times 10^{3})$ with the correct significant figures.

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Problem 859

Calculate $(4.123 \times 0.12) + 24.2$ and give the result with the right significant figures.

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Problem 860

Calculate $(17.103 + 2.03) \times 1.02521$ with the correct number of significant figures.

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Problem 861

Report the significant digits in the calculation: $(4.3-3.7) \times 12.3=$

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Problem 862

5 Ordina i numeri nel riquadro, dal più piccolo al più grande. Aggiungi zeri se serve. a) $0,0,1 \quad 0,09 \quad 0,10 \quad 0,11 \quad 0,02$ b) $2,021 \quad 2,002 \quad 0,020 \quad 2,202 \quad 1,2$

See Solution

Problem 863

7 Scrivi in cifre. a) 8 unità $e 2$ centesimi b) 3 decine e 4 decimi c) 0 unità 7 millesimi d) 1 centinaio e 34 millesimi.

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Problem 864

a) Qual è il più piccolo numero con due cifre decimali che soddisfa la condizione $n \geq 4,2$ ? b) Quale numero sulla retta si trova alla stessa distanza dai numeri 0,53 e 0,56 ?

See Solution

Problem 865

Calculate the total cost for remodeling: 3 cans of paint at \$13.22, 2 brushes at \$12.22, and a helper for \$145.

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Problem 866

Convert the fraction $\frac{3}{8}$ to a decimal.

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Problem 867

Find the decimal form of $\frac{5}{9}$ . Choose from: A. $9.\overline{5}$ B. $0.\overline{5}$ C. 0.5 D. $5.\overline{5}$

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Problem 868

Convert the fraction $\frac{10}{11}$ into a decimal. Choose the correct option. A. $0 . \overline{90}$ B. 0.190 C. $0.1 \overline{90}$ D. 0.90

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Problem 869

Convert the number $5.7 \times 10^{7}$ to decimal notation.

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Problem 870

Convert $9.26 \times 10^{3}$ to decimal notation. What is the result?

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Problem 871

Convert the number $8.5 \times 10^{-1}$ to decimal form. What is it?

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Problem 872

Convert the number $5.51 \times 10^{-4}$ to decimal notation.

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Problem 873

Convert 0.00052 to scientific notation: $0.00052 =$

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Problem 874

Convert the number $0.20 \times 10^{4}$ into scientific notation: $0.20 \times 10^{4}=\square \times$ .

See Solution

Problem 875

Express 0.000064 in scientific notation: $0.000064 =$

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Problem 876

Compute and express in decimal: $(2 \times 10^{8})(2 \times 10^{-5}) = \square$ (Type an integer or decimal.)

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Problem 877

Calculate $(9.7 \times 10^{8}) \cdot (4 \times 10^{-6})$ and give the answer in decimal form.

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Problem 878

Compute and express in decimal: $\frac{12 \times 10^{7}}{4 \times 10^{2}}$

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Problem 879

Calculate and express in decimal form: $\frac{4.4 \times 10^{-7}}{2 \times 10^{-3}}$ .

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Problem 880

Convert $0.0004$ and $8,000,000$ to scientific notation, then calculate $(0.0004)(8,000,000)$ in scientific notation.

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Problem 881

Convert $0.0004$ and $8,000,000$ to scientific notation and find their product in scientific notation.

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Problem 882

Express 2.36 trillion in scientific notation.

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Problem 883

For a country, find the scientific notation for 2.36 trillion taxes and 316 million population, then calculate tax per citizen.

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Problem 884

Convert 15.55 trillion to scientific notation.

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Problem 885

In 2014, taxes were \$2.36 trillion and population was 316 million. Find tax per citizen in scientific notation.

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Problem 886

For a country with a national debt of 15.55 trillion, express it in scientific notation: $1.555 \times 10^{13}$ . Also, express \$70,000 in scientific notation.

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Problem 887

Find the scientific notation for 15.55 trillion and \$70,000, then calculate how many citizens can get free college education.

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Problem 888

A bottle has $0.068 \mathrm{~L}$ of cough syrup. If 5 mL is taken 4 times daily, how many days until a refill?

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Problem 889

Convert the following metric units: 1) $0.649 \mu \mathrm{L} = ? \mathrm{mL}$ 2) $55.3 \mathrm{km} = ? \mathrm{m}$

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Problem 890

Find the mass of 30,000 oxygen molecules given that one molecule has a mass of $5.3 \times 10^{-23}$ gram. Answer in scientific notation: $\square$ gram.

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Problem 891

Convert the fraction $\frac{1}{8}$ to a decimal. What is $\frac{1}{8}=$ ?

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Problem 892

Calculate the decimal value of $\frac{8.4 \times 10^{-7}}{4 \times 10^{-4}}$ .

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Problem 893

Convert 0.00014 to scientific notation. $0.00014 = a \times 10^b$ (use multiplication symbol as needed).

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Problem 894

Estimate the sum of $6.86 + 2.11 + 19.33$ by rounding to the nearest integer. Compare the estimate with the actual sum.

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Problem 895

Estimate the product of $20.17 \times 2.5$ by rounding for easy calculation, then compare it to the actual answer.

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Problem 896

Estimate the product of $20.23 \times 8.5$ by rounding. Compare your estimate to the actual answer. What is your estimate?

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Problem 897

Convert 5.31 L to deciliters. Use the conversion: 1 L = 10 dL.

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Problem 898

Convert $2.93 \, \text{dg}$ and $0.0481 \, \mu \text{g}$ to grams.

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Problem 899

Count the significant figures in these values: 0.052000, 0.05, 10590, 3000, 2300, 0.0090, 7.000.

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Problem 900

Round the following calculations to the correct significant figures:
1. $\frac{23.72}{3.37}$
2. $9 + 2.8 - 0.135 + 10.6$
3. $\left(\frac{23.72}{3.37}\right) + 4.4$

See Solution

1 ...6 7 8 9 10 11 12 ...17

Decimals

Problem 801

Solve using the standard algorithm: 1.8−0.9=1.8 - 0.9 = 1.8−0.9=

Problem 802

Calculate 5.182−0.095.182 - 0.095.182−0.09.

Problem 803

Calculate 341.84−21.92341.84 - 21.92341.84−21.92.

Problem 804

Average monthly snowfall in King Salmon, Alaska, is 45.9 inches÷7 months45.9 \text{ inches} \div 7 \text{ months}45.9 inches÷7 months. Why is this reasonable?

Problem 805

What was the hourly labor cost if Serenity paid $309.50\$ 309.50$309.50 total, with $62\$ 62$62 for parts and 4.5 hours of work?

Problem 806

A store owner has 57.4 pounds of candy. If he divides it into 7 boxes, how many pounds will each box contain?

Problem 807

Divide 9.13 by 0.58 and round the answer to the nearest hundredth.

Problem 808

John worked 5.9 hours daily for 5 days. Calculate the total hours worked: 5.9×55.9 \times 55.9×5.

Problem 809

Lisa spent \$8.74 on grapes at \$0.76 per pound. How many pounds did she buy?

Problem 810

Each kitten's weight after gaining 2.3 ounces: initial weights were 3.6, 4.2, and 3.3 ounces. Find final weights.

Problem 811

Is Jaime's calculation of 4.4−0.33=1.14.4 - 0.33 = 1.14.4−0.33=1.1 reasonable? Explain your reasoning.

Problem 812

Calculate the product of 2.01 and 0.43: 2.01×0.432.01 \times 0.432.01×0.43.

Problem 813

Convert 0.000000783 to scientific notation.

Problem 814

Convert 19.2×10819.2 \times 10^{8}19.2×108 minutes to hours.

Problem 815

Convert 19.2×10819.2 \times 10^{8}19.2×108 minutes to hours.

Problem 816

Convert 6.16×1066.16 \times 10^{6}6.16×106 to standard form.

Problem 817

Convert the number 0.00037 into scientific notation.

Problem 818

What is the standard form of the number 6.14×10−96.14 \times 10^{-9}6.14×10−9? Drag the answer into the box.

Problem 819

Calculate 275.75−113.5+36.125275.75 - 113.5 + 36.125275.75−113.5+36.125 and round to the correct significant figures.

Problem 820

Find the sum of 9.245+3.57259.245 + 3.57259.245+3.5725 and round to the correct significant figures.

Problem 821

Calculate the sum of 5.295+33.75+2.125.295 + 33.75 + 2.125.295+33.75+2.12 and express your answer with the correct significant figures.

Problem 822

Calculate 450/950.20450 / 950.20450/950.20 and round to the correct number of significant figures using the division rule.

Problem 823

Calculate 0.505÷0.20.505 \div 0.20.505÷0.2 and round your answer to the correct number of significant figures.

Problem 824

Calculate 3.25×10−2+3.572×10−3+6.125×10−13.25 \times 10^{-2} + 3.572 \times 10^{-3} + 6.125 \times 10^{-1}3.25×10−2+3.572×10−3+6.125×10−1 and round to the correct significant figures.

Problem 825

Determine the number of significant figures in the number 2.005×10−92.005 \times 10^{-9}2.005×10−9.

Problem 826

Count the significant figures in the number 0.0700200.0700200.070020.

Problem 827

Count the significant figures in the number 1.001001.001001.00100.

Problem 828

Estima el cociente. 28.3÷928.3 \div 928.3÷9 A. 30 B. 10 C. 1 D. 3

Problem 829

Estima el cociente. 4.81÷0.974.81 \div 0.974.81÷0.97 5 1 0 50

Problem 830

Estima el cociente redondeando cada número al número entero más cercano. 33.7÷9.533.7 \div 9.533.7÷9.5Escribe tu respuesta en el recuadro.

Problem 831

(7.01×103)+(5.6×10−1)\left(7.01 \times 10^{3}\right)+\left(5.6 \times 10^{-1}\right)(7.01×103)+(5.6×10−1)PLY YOUR SKILLS Find the number of second The speed of liaht is appro

Problem 832

Calculate the total bill for a table with a ham sandwich, meatball hoagie, fries, iced tea, and lemonade.

Problem 833

You drive 1,820 miles for 36 hours, earning \$0.60 per mile. How much will you earn? Options: A. \$21.60 B. \$1,092.00 C. \$2,092.00 D. \$10,920.00 F. \$65,520.00

Problem 834

Calculate: 78.084molL×42L78.084 \frac{\mathrm{mol}}{\mathrm{L}} \times 42 \mathrm{L}78.084Lmol​×42L, 7.8084molL×0.9L7.8084 \frac{\mathrm{mol}}{\mathrm{L}} \times 0.9 \mathrm{L}7.8084Lmol​×0.9L, and 626.45mol÷34.3L626.45 \mathrm{mol} \div 34.3 \mathrm{L}626.45mol÷34.3L.

Problem 835

Calculate the following: 78.084molL×42L78.084 \frac{\mathrm{mol}}{\mathrm{L}} \times 42 \mathrm{L}78.084Lmol​×42L, 7.8084molL×0.9L7.8084 \frac{\mathrm{mol}}{\mathrm{L}} \times 0.9 \mathrm{L}7.8084Lmol​×0.9L, and 626.45mol÷34.3L626.45 \mathrm{mol} \div 34.3 \mathrm{L}626.45mol÷34.3L.

Problem 836

Calculate the total cost to pave a 2-mile, 20-foot-wide road at \$23.35 per linear foot.

Problem 837

Problem 838

Problem 839

Calculate the following: 15.707 g - 1.47 g, 6.727 g + 1.40 g, and 8.87 g - 0.600 g.

Problem 840

Calculate the following: 8.627 mL + 1.77 mL = ?, 2.900 mL + 18.8 mL = ?, 15.82 mL - 0.577 mL = ?

Problem 841

Solve using the standard algorithm: $1.8 - 0.9 =$

Calculate $5.182 - 0.09$ .

Calculate $341.84 - 21.92$ .

Average monthly snowfall in King Salmon, Alaska, is $45.9 \text{ inches} \div 7 \text{ months}$ . Why is this reasonable?

What was the hourly labor cost if Serenity paid $\$ 309.50$ total, with $\$ 62$ for parts and 4.5 hours of work?

John worked 5.9 hours daily for 5 days. Calculate the total hours worked: $5.9 \times 5$ .

Is Jaime's calculation of $4.4 - 0.33 = 1.1$ reasonable? Explain your reasoning.

Calculate the product of 2.01 and 0.43: $2.01 \times 0.43$ .

Convert $19.2 \times 10^{8}$ minutes to hours.

Convert $19.2 \times 10^{8}$ minutes to hours.

Convert $6.16 \times 10^{6}$ to standard form.

What is the standard form of the number $6.14 \times 10^{-9}$ ? Drag the answer into the box.

Calculate $275.75 - 113.5 + 36.125$ and round to the correct significant figures.

Find the sum of $9.245 + 3.5725$ and round to the correct significant figures.

Calculate the sum of $5.295 + 33.75 + 2.12$ and express your answer with the correct significant figures.

Calculate $450 / 950.20$ and round to the correct number of significant figures using the division rule.

Calculate $0.505 \div 0.2$ and round your answer to the correct number of significant figures.

Calculate $3.25 \times 10^{-2} + 3.572 \times 10^{-3} + 6.125 \times 10^{-1}$ and round to the correct significant figures.

Determine the number of significant figures in the number $2.005 \times 10^{-9}$ .

Count the significant figures in the number $0.070020$ .

Count the significant figures in the number $1.00100$ .

Estima el cociente. $28.3 \div 9$ A. 30 B. 10 C. 1 D. 3

Estima el cociente. $4.81 \div 0.97$ 5 1 0 50

Estima el cociente redondeando cada número al número entero más cercano. $33.7 \div 9.5$
Escribe tu respuesta en el recuadro.

$\left(7.01 \times 10^{3}\right)+\left(5.6 \times 10^{-1}\right)$
PLY YOUR SKILLS Find the number of second The speed of liaht is appro

Calculate: $78.084 \frac{\mathrm{mol}}{\mathrm{L}} \times 42 \mathrm{L}$ , $7.8084 \frac{\mathrm{mol}}{\mathrm{L}} \times 0.9 \mathrm{L}$ , and $626.45 \mathrm{mol} \div 34.3 \mathrm{L}$ .

Calculate the following: $78.084 \frac{\mathrm{mol}}{\mathrm{L}} \times 42 \mathrm{L}$ , $7.8084 \frac{\mathrm{mol}}{\mathrm{L}} \times 0.9 \mathrm{L}$ , and $626.45 \mathrm{mol} \div 34.3 \mathrm{L}$ .

Calculate the following: 1) $10.970 \mathrm{~g}-1.17 \mathrm{~g}=$ ? 2) $3.907 \mathrm{~g}-1.57 \mathrm{~g}=$ ? 3) $17.50 \mathrm{~g}+0.7 \mathrm{~g}=$ ?

Calculate the following: 15.527 g - 1.5 g = $\square$ g, 13.900 g + 0.87 g = $\square$ g, 1.920 g - 0.8 g = $\square$ g.

Add or subtract these measurements, ensuring the correct significant digits:
8.70 mL - 7.8 mL = \square mL 17.570 mL + 18.8 mL = \square mL 11.9 mL + 13.577 mL = \square mL

Add or subtract these measurements, ensuring the correct significant digits:
8.700 g + 1.37 g = \square g 16.600 g - 0.70 g = \square g 7.827 g - 1.2 g = \square g

Calculate the following: 78.08 cm × 50 cm = $\square$ cm², 792.4 g ÷ 43.37 mL = $\square$ g/mL, 0.93 g/mL × 4.925 mL = $\square$ g.

Calculate the product of 3.15, 2.5, and 4.00 with the correct significant figures: $3.15 \times 2.5 \times 4.00 =$

Find the result of $313.0 - (1.2 \times 10^{3})$ with the correct significant figures.

Calculate $(4.123 \times 0.12) + 24.2$ and give the result with the right significant figures.

Calculate $(17.103 + 2.03) \times 1.02521$ with the correct number of significant figures.

Report the significant digits in the calculation: $(4.3-3.7) \times 12.3=$

5 Ordina i numeri nel riquadro, dal più piccolo al più grande. Aggiungi zeri se serve. a) $0,0,1 \quad 0,09 \quad 0,10 \quad 0,11 \quad 0,02$ b) $2,021 \quad 2,002 \quad 0,020 \quad 2,202 \quad 1,2$

7 Scrivi in cifre. a) 8 unità $e 2$ centesimi b) 3 decine e 4 decimi c) 0 unità 7 millesimi d) 1 centinaio e 34 millesimi.

a) Qual è il più piccolo numero con due cifre decimali che soddisfa la condizione $n \geq 4,2$ ? b) Quale numero sulla retta si trova alla stessa distanza dai numeri 0,53 e 0,56 ?

Convert the fraction $\frac{3}{8}$ to a decimal.

Find the decimal form of $\frac{5}{9}$ . Choose from: A. $9.\overline{5}$ B. $0.\overline{5}$ C. 0.5 D. $5.\overline{5}$

Convert the fraction $\frac{10}{11}$ into a decimal. Choose the correct option. A. $0 . \overline{90}$ B. 0.190 C. $0.1 \overline{90}$ D. 0.90

Convert the number $5.7 \times 10^{7}$ to decimal notation.

Convert $9.26 \times 10^{3}$ to decimal notation. What is the result?

Convert the number $8.5 \times 10^{-1}$ to decimal form. What is it?

Convert the number $5.51 \times 10^{-4}$ to decimal notation.

Convert 0.00052 to scientific notation: $0.00052 =$

Convert the number $0.20 \times 10^{4}$ into scientific notation: $0.20 \times 10^{4}=\square \times$ .