Grade 10 · Science · Chemistry

10th grade SI units, prefixes and converting with unit analysis worksheet

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SI units, prefixes and converting with unit analysis

Grade 10 Science Worksheet - Challenge Me

NameDate

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

A poster has an area of 3500 cm². Using 1 m = 100 cm, what is its area in m², Ari?
A tabletop has an area of 12000 cm². Using 1 m = 100 cm, what is its area in m², Esme?
3.
How many cubic centimeters are in 1 mL, Kira?
- 10
- 1
- 1000
4.
A park covers 2 km². How many square meters is that, Luz?
- 2,000,000 m²
- 20,000 m²
- 2000 m²
5.
USGS lists water at 21 °C as 0.99802 g/cm³. What is that in kg/m³, Milo?
- 998.02 kg/m³
- 99.802 kg/m³
- 0.99802 kg/m³
6.
Why does 1 g/cm³ equal 1000 kg/m³, Noah?
- Both units shrink by the same factor
- ÷ 1000 on top, ÷ 10⁶ on the bottom
- A kilogram is 10⁶ grams
7.
About what mass does 250 cm³ of water at 21 °C (0.99802 g/cm³) have, Pia?
- About 0.25 g
- About 2505 g
- About 249.5 g
8.
Ren says 1 m² = 100 cm² because 1 m = 100 cm. Agree or disagree?
- Agree: the factor is 100
- Disagree: it is 10,000 cm²
- Agree: squares don't change it
9.
Tala says a conversion is set up correctly if the leftover units match the answer's units. Agree or disagree?
- Disagree: numbers alone decide
- Disagree: units don't matter
- Agree: the units check it
10.
Zee says 2.5 kg of potatoes weighs more than 2500 g of potatoes. Agree or disagree?
- Disagree: they are equal
- Agree: 2500 is bigger than 2.5
- Agree: kg is the bigger unit

SI units, prefixes and converting with unit analysis. Every version has 10 questions, and the answer key prints on the second page.

I can name SI base units (m, kg, s, K, mol) and pick a sensible unit for a measurement.
I can use kilo-, centi-, milli-, micro- and nano- as powers of ten.
I can set up a chain of conversion factors so units cancel, such as km/h to m/s.
I can convert squared, cubed and compound units, such as cm² to m² and g/cm³ to kg/m³.

Standard: practices (no PE)

SI: The International System of Units, used by scientists everywhere

prefix: A word part that multiplies a unit by a power of ten

conversion factor: A fraction equal to 1, such as 1000 m ÷ 1 km

unit analysis: Converting by canceling units in a chain of factors

base unit: One of the seven SI units the others are built from

Your child divided. A milligram is smaller than a gram, so there are more of them: multiply by 1000.

Your child turned the factors upside down. Write each factor so the old unit cancels.

Your child used 100 for square units. 1 m² = 100 cm × 100 cm = 10,000 cm².

What is the most common mistake with si units, prefixes and converting with unit analysis?

Your child divided. A milligram is smaller than a gram, so there are more of them: multiply by 1000.

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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