Significant Figures - Physical Science
Significant Figures
1. How many significant figures are there in the following numbers?
a. 53.56 ____________
b. 0.54 ____________
c. 0.001123 ___________
d. 97.0044 ___________
e. 893,000 ___________
f. 0.5400 ___________
g. 1,455,000 ___________
h. 1,567 ____________
i. 12,004,560 ___________
2. Perform the following calculations and express the answer using the proper number of significant figures. Do not forget your units.
a. 23.5 m x 0.85 m
____________________
b. 0.0035 g/cm3 x 456 cm3
____________________
c. 25 m/s x 10.0 s
____________________
d. 30.5 cm x 27.0 cm
____________________
e. 9.81 m/s2 x 5.0 s
____________________
3. Why are the zeroes in 0.00043 meters not significant while the zeroes in 0.244000 are significant?
4. Why are significant figures important when doing research?
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