Name(s):_________________________
Significant Figure Calculations
Solve the following mathematical problems such that the answers have the correct number of
significant figures:
1)
334.54 grams + 198 grams = ___________________
2)
34.1 grams / 1.1 mL = ___________________
3)
2.11 x 103 joules / 34 seconds = ___________________
4)
0.0010 meters – 0.11 m = ___________________
5)
349 cm + 1.10 cm + 100 cm = ___________________
6)
450 meters / 114 seconds = ___________________
7)
298.01 kilograms + 34.112 kilograms = ___________________
8)
84 m/s x 31.221 s = ___________________
9) A student was given a wooden block and determined the following
properties in the data table to the right. Calculate the wooden block’s
density (including units).
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Wooden Block
Mass
10.56
Length
2.23
Width
2.23
Height
2.01
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grams
cm
cm
cm
Significant Figure Calculations – Answers
Solve the following mathematical problems such that the answers have the correct number of
significant figures:
1)
334.54 grams + 198 grams = 533 grams (rounded from 532.42 grams)
2)
34.1 grams / 1.1 mL = 31 g/mL (not rounded)
3)
2.11 x 103 joules / 34 seconds = 62 J/s (rounded from 62.0588 J/s)
4)
0.0010 meters – 0.11 m = -0.11 m (rounded from -0.109 m)
5)
349 cm + 1.10 cm + 100 cm = 500 cm (rounded from 450.1 cm)
6)
450 meters / 114 seconds = 3.9 m/s (rounded from 3.9474 m/s)
7)
298.01 kilograms + 34.112 kilograms = 332.12 kg (rounded from 332.122 kg)
8)
84 m/s x 31.221 s = 2600 m (rounded from 2622.564 m)
9) A student was given a wooden block and determined the following properties in the data table to
the right. Calculate the wooden block’s density (including units).
Wooden Block
Mass
Length
Width
Height
10.56
2.23
2.23
2.01
grams
cm
cm
cm
Unrounded 1.056472
Rounded
1.06 g/cm^3
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© 2008 Cavalcade Publishing; All Rights reserved