Grade 3 · Math
Convert centimeters to millimeters practice
Use ten millimeters for every centimeter.
Opening your practice adventure…
Try a sample
Convert 1 centimeter to millimeters.
- 0
- 10
- 30
- 40
See the answer & why
10
1 centimeter equals 10 millimeters, so 1 × 10 = 10 millimeters.
A little hint: Multiply by the number of smaller units in one larger unit.
A teaching tip
Write the conversion factor and keep track of which unit is smaller.