Significant Figures Practice
Practice identifying and using significant figures in measurements and calculations.
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Significant Figures Practice
Name:
Date:
Score:
Read each question carefully and provide your answers. Remember the rules for significant figures.
1. How many significant figures are in the measurement 0.0050 g?
1
2
3
4
2. Which of the following measurements has four significant figures?
1200 m
0.0120 kg
12.00 L
120. cm
3. Non-zero digits are always figures.
4. Zeros between non-zero digits are .
5. Leading zeros (zeros before non-zero digits) are significant.
6. Trailing zeros are significant only if the number contains a point.
7. State the number of significant figures in each of the following measurements:
a) 34.50 cm
b) 0.0078 g
c) 100.0 mL
d) 5000 kg
8. When adding or subtracting, the answer should have the same number of decimal places as the measurement with the fewest decimal places.
True
False
9. When multiplying or dividing, the answer should have the same number of significant figures as the measurement with the fewest significant figures.
True
False
10. Perform the following calculations and report your answers with the correct number of significant figures:
a) 2.34 cm + 5.6 cm =
b) 12.55 g - 3.2 g =
c) 4.5 m * 2.15 m =
d) 100.0 L / 20.0 s =
11. Look at the ruler below. What is the length of the shaded bar, reported with the correct number of significant figures?
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