# WS 1.4 – Significant Figures

```Name:_______________________________
Date:__________________
Per:_______
WS 1.4 – Significant Figures
Determine the number of significant digits in each of the following measurements.
1) 6.751 g
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8) 2500.0 cm
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15) 0.0067 g
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2) 43.07 cm
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9) 0.070 g
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16) 48.57193 daL
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3) 0.157 kg
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10) 0.189 mL
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17) 26.509 cm
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4) 2.690 g
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11) 30.07 g
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18) 0.1209 m
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5) 28.0 mL
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12) 144.07 g
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19) 0.0230 cm
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6) 0.002300 mg
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13) 0.106 cm
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20) 54.52 mL
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7) 2500 m
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14) 40.319 hg
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21) Which number or numbers above are the least accurate?
22) Which number or numbers above are the most accurate?
23) What do significant figures determine about a number?
The following problems have been performed on a calculator. Rewrite the answers so that they have the correct
number of significant figures. Remember the answer should have the same number of significant digits as the least
accurate measurement.
24) 1.25 g x 8.6 C =
10.75 gC
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25) 100.00 g  25.0 mL =
4 g/mL
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26) 500.00 cm x 40.00 cm =
20,000 cm2
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27) 38 cm + 5.100 cm + 4.13 cm =
47.23 cm
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28) 716.55 g – 0.005 g =
716.545 g
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29) 28.00 g  85.2 cm =
0.3286385 g/cm3
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30) 8.000 km – 0.54 km =
7.46 km
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31) 23.18 m + 6.819 m =
29.999 m
________________
```