Scientific Figures Worksheet
A Grade 9 Science worksheet focusing on understanding and applying scientific figures (significant figures) in measurements and calculations.
Includes
Standards
Scientific Figures
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Pay close attention to the rules for scientific figures (significant figures) in all calculations and answers.
1. How many significant figures are in the measurement 0.005020 meters?
2
3
4
7
2. When multiplying or dividing measurements, the answer should have the same number of significant figures as the measurement with the:
most significant figures
least significant figures
exact number of digits
largest decimal place
3. Non-zero digits are always .
4. Leading zeros (zeros before non-zero digits) are significant.
5. Trailing zeros are significant only if the number contains a .
6. Determine the number of significant figures in the following measurements:
a) 12.050 g
b) 8,000 km
c) 0.0075 s
d) 1.00 x 10^3 Pa
7. Perform the following calculation and express the answer with the correct number of significant figures:
(2.5 cm * 3.45 cm) / 1.2 cm =
8. Explain why significant figures are important in scientific measurements and calculations.
9. All zeros between non-zero digits are significant.
True
False
10. When adding or subtracting, the answer should be rounded to the same number of decimal places as the measurement with the fewest decimal places.
True
False
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