Grade 10 · Science · Chemistry

10th grade Significant figures in measurements and calculations worksheet

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Significant figures in measurements and calculations

Grade 10 Science Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

Three samples of flour have masses 12.52 g, 3.1 g and 0.247 g. What is their total mass, to the correct precision, Ari?
Three samples of flour have masses 105.3 g, 2.46 g and 0.118 g. What is their total mass, to the correct precision, Bo?
Three samples of flour have masses 8.4 g, 0.65 g and 1.272 g. What is their total mass, to the correct precision, Esme?
4.
What is 25.0 mL − 3.42 mL, to the correct precision, Jun?
- 21.58 mL
- 22 mL
- 21.6 mL
5.
A 10.4 g block has a volume of 2.1 cm³. What is its density, to the correct significant figures, Kira?
- 4.952 g/cm³
- 5.0 g/cm³
- 4.95 g/cm³
6.
Milo reads a ruler marked every 0.1 cm as 4.6528 cm. Agree or disagree that this is a good reading?
- Agree: more digits make it more accurate
- Agree: rulers show every digit
- Disagree: only one digit is estimated
7.
Noah says 2.0 cm and 2 cm are the same measurement. Agree or disagree?
- Agree: they are equal numbers anyway
- Agree: zeros add nothing
- Disagree: 2.0 was read more finely
8.
A calculator shows 4.0 ÷ 3.0 = 1.333333. What should be reported, Ren?
- 1.3
- 1
- 1.333333
9.
A calculator shows 5.00 × 2.000 = 10. What should be reported, Tala?
- 10.000
- 10.0
- 10
10.
When should a two-step calculation be rounded, Zee?
- Once, at the end
- Before doing anything
- After each step

Significant figures in measurements and calculations. Every version has 10 questions, and the answer key prints on the second page.

I can read a tool to its smallest mark plus one estimated digit.
I can count significant figures, including which zeros count, and in scientific notation.
I can round a product or quotient to the fewest significant figures, and a sum or difference to the fewest decimal places.
I can tell exact numbers (counts and definitions) from measured ones.

Standard: practices (no PE)

significant figures: The certain digits of a measurement plus one estimated digit

estimated digit: The last digit, read between the smallest marks

leading zero: A zero before the first nonzero digit; it doesn't count

captive zero: A zero between nonzero digits; it counts

exact number: A counted or defined number, with no limit on its precision

Your child rounded to decimal places. Significant figures count from the first nonzero digit.

Your child kept every calculator digit. An answer can't be more certain than the measurements it came from.

Your child counted the leading zeros. Zeros before the first nonzero digit only place the decimal point.

What is the most common mistake with significant figures in measurements and calculations?

Your child rounded to decimal places. Significant figures count from the first nonzero digit.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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