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 - Building Confidence

NameDate

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

A grain of rice has a mass of 0.025 g. How many milligrams is that, Esme?
Read this first
SI prefixes (NIST)
prefix symbol factor
kilo k 10³
centi c 10⁻²
milli m 10⁻³
micro μ 10⁻⁶
nano n 10⁻⁹
2.
Using the table, how many millimeters are in 1 meter, Jun?
- 100
- 1,000,000
- 1000
3.
Using the table, what factor does the prefix micro (μ) stand for, Kira?
- 10⁻³
- 10⁻⁶
- 10⁶
4.
Using the table, how many grams are in 1 kilogram, Luz?
- 100
- 1000
- 10
5.
What is the SI base unit of mass, Milo?
- The kilogram
- The gram
- The pound
6.
What is the SI base unit of temperature, Noah?
- The degree Celsius
- The kelvin
- The degree Fahrenheit
7.
Which SI base unit measures amount of substance, Pia?
- The mole
- The liter
- The newton
8.
Which unit suits the length of a pencil, Ren?
- Nanometers
- Kilometers
- Centimeters
9.
Which unit suits the volume of one drop of milk, Tala?
- Cubic meters
- Milliliters
- Kiloliters
10.
Which unit suits the wavelength of visible light, Zee?
- Meters
- Nanometers
- Kilometers

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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