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Math

QuestionEstimate if 22.8×4.7=107.1622.8 \times 4.7 = 107.16 is reasonable. If not, state no and provide a reasonable estimate.

Studdy Solution

STEP 1

Question: What is the nearest whole number for 22.8 and 4.7?
A) 22 and 4 B) 23 and 5 C) 23 and 4 D) 22 and 5
Answer: B) 23 and 5

STEP 2

Question: What is the result of 23 times 5?
A) 105 B) 115 C) 125 D) 135
Answer: B) 115

STEP 3

Question: Is the given answer of 107.16 for 22.8 times 4.7 a reasonable estimate?
A) Yes B) No C) Can't determine D) Need more information
Answer: B) No

STEP 4

Question: What is the nearest whole number for 115 and 23 and what's their multiplication result?
A) 110 and 20, result is 2200 B) 120 and 20, result is 2400 C) 110 and 25, result is 2750 D) 120 and 25, result is 3000
Answer: B) 120 and 20, result is 2400

STEP 5

Question: Is the given answer of 105.84 for 2.1 times 4.9 times 7.2 a reasonable estimate?
A) Yes B) No C) Can't determine D) Need more information
Answer: B) No

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