QuestionRewrite 247081352.4 with 2 significant figures: 2.4, 250000000, 240000000, or 2.5?
Studdy Solution
STEP 1
Question: What are significant figures in a number?
A) The number of zeros in a number
B) The digits in a number that carry meaningful information about its precision
C) The number of digits after the decimal point
D) The number of digits before the decimal point
Answer: B) The digits in a number that carry meaningful information about its precision
STEP 2
Question: In the number 247081352.4, which are the first two non-zero digits?
A) 2 and 4
B) 2 and 7
C) 4 and 7
D) 2 and 0
Answer: A) 2 and 4
STEP 3
Question: If you have the number 247 and you want to keep 2 significant figures, what will be the new number?
A) 24
B) 25
C) 20
D) 27
Answer: B) 25
STEP 4
Question: Why can't we simply write 2.5 when rewriting 247081352.4 with 2 significant figures?
A) Because 2.5 is a smaller number
B) Because 2.5 has fewer digits
C) Because 2.5 does not have the same order of magnitude as the original number
D) Because 2.5 is not a whole number
Answer: C) Because 2.5 does not have the same order of magnitude as the original number
STEP 5
Question: How do we adjust 2.5 to have the same order of magnitude as 247081352.4?
A) Add zeros to the end of 2.5
B) Multiply 2.5 by 10
C) Subtract 2.5 from 247081352.4
D) Replace the digits we rounded off with zeros, giving us 250000000
Answer: D) Replace the digits we rounded off with zeros, giving us 250000000
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