Significant Figures Mastery
This worksheet helps Grade 12 students master the rules of significant figures in measurements and calculations, including addition, subtraction, multiplication, and division.
Includes
Standards
Significant Figures Mastery
Name:
Date:
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Read each question carefully and provide your answers, paying close attention to the rules of significant figures.
1. How many significant figures are in the measurement 0.005070 g?
3
4
5
7
2. Which of the following numbers has exactly two significant figures?
100.0
0.020
500
1.23
3. The result of 12.5 cm + 2.34 cm + 0.087 cm expressed with the correct number of significant figures is .
4. When multiplying 6.20 cm by 1.5 cm, the answer should be reported as cm².
5. A student measures the length of an object using the ruler shown. If the object extends to the mark indicated by the arrow, what is the length of the object with the appropriate number of significant figures? (Assume the arrow points to 4.35 cm)
6. Trailing zeros are always significant.
True
False
7. Exact numbers have an infinite number of significant figures.
True
False
8. Calculate the density of a substance with a mass of 23.45 g and a volume of 2.2 mL. Report your answer with the correct number of significant figures.