Name ______________________________
Significant Figures Practice
1. How many significant figures are there in the values of X obtained from
a. X= 34.0300 g divided by 12.09 cm3
b. X = (0.00630 cm) (2.003 cm) (200.0 cm)
c. X= 32.647 in – 32.327 in
d. X = 236.45 g – 1.3 g
(3.4561 cm) (32.567 cm2)
2. Calculate the following to the correct number of significant figures.
a. X = 2.63 g
4.982 cm3
b.
X = 13.54 mi
5.00 hr.
c. X = 13.2 g + 1468 g + 0.04 g
d. X =
3.
2 g + 0.127 g + 459 g
6.2 cm3 - 0.567 cm3
Round off the following quantities to the indicated number of significant figures.
a. 132.505 g (four sig. fig.’s)
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b. 298.693 cm (five sig. fig.’s)
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c. 13.452 lb (two sig. fig.’s)
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d. 345 oz (two sig. fig.’s)
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e. 7.4855 g (three sig. fig.’s)
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f. 298.693 cm (five sig. fig.’s)
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g. 11.698 lb (one sig. fig.’s)
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h. 12.05 oz (three sig. fig.’s)
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4. Express the following measurements in scientific notation:
a. 4633.2 mg
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b. 0.000473 L
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c. 100.1 C
̊
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d. 1.006 g
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5. Which of the following statements use numbers with no uncertainty (exact numbers)?
a. There are 12 dozen apples in a gross of apples
b. The tomatoes that you are buying weigh 4.5 lb.
c. Your temperature is 99.2 F̊
d. One foot equals 12 inches
e. We will deliver 13 potted geraniums to your house tomorrow.
f. My car goes 22.6 miles per gallon of gasoline