Question

When multiplying and dividing numbers, the rule for Significant Figures is that the answer:

a) Reflects the number with the fewest S.F.
b) Is the sum of S.F. in the numbers multiplied/divided
c) Is always rounded up
d) Is the product of S.F. in the numbers multiplied/divided

Answer 1

When multiplying or dividing numbers, the rule is to round the result to the same number of significant figures as the number with the fewest significant figures.

Step-by-step explanation:

Multiplication and Division with Significant Figures

When multiplying or dividing numbers, the rule is to round the result to the same number of significant figures as the number with the fewest significant figures.

For example:

1. Multiply 0.6238 cm by 6.6 cm:
   Answer: 4.11348 cm (rounded to 4.11 cm)
2. Divide 421.23 g by 486 mL:
   Answer: 0.86603 g/mL (rounded to 0.87 g/mL)

Both these answers have the same number of significant figures as the number with the fewest significant figures.