Name ________________________ Period _____
SIGNIFICANT FIGURES HOMEWORK
Identify the number of significant figures in each of the following measurements. Remember your units!
1. 520 mL ____________
2. 0.0102 ms ____________
3. 0.230 kg ____________
4. 25,600 L ____________
5.
6.
7.
8.
10.002 ns ____________
0.451 Pa ____________
0.001 cm ____________
10,000. ps ___________
Perform the following calculations and round off the answer to the correct number of significant figures.
Remember your units!
9. 0.3287g x 45.2g =
13. 0.258mL ÷ 0.36105mL =
10. 125.5 kg + 52.68 kg + 2.1 kg =
14. (1250 cal – (234.207 ÷ 52.69 cal)) =
11. 52.8 Pa + 3.0025 Pa =
235.4 Pa
15. 78.26 L - 89.50 L =
678.2 L + 9511 L
12.(0.12g + 5.16g) x (45.56g - 93.0g) =
16. 68.32ns+ (-1.001ns) + (-0.00367ns) + (-678.1ns)=
17. Calculate the volume of a cube that is 3.4cm high, 4.75 cm wide and 2.145 cm long. (Answer should be in
the correct significant figures.)
18. Why are significant figures NOT important when solving problems in your math class?
19. Using two different instruments, I measured the length of my foot to be 27 cm and 27.00 cm. Explain the
difference between these two measurement.