Decimal places are overwriting the
significant figure rule. The answer should have the same number of decimal
places as the quantity with the least decimal places. For Example,
Calculations Using
Significant Figures
Significant
figures in multiplications and divisions
3.7 m + 9.40 m =
13.1 m
2.35 L + 1.2 L = 3.6
L
3.67 kg + 12.498 kg
= 16.17 kg
(0.023 m) x (3.40 m)
= 0.078 m2
56.90 s / 2.45
s = 23.2
Significant
figures in additions and subtractions
The product or quotient should
have the same number of significant digits as the quantity with least
significant figures. For Example,