Convert centimetres and millimetres
1 cm = 10 mm. Smaller units make a bigger count; bigger units make a smaller count.
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30 mm = ___ cm
Answer: 3 cm
1 cm = ___ mm
Answer: 10 mm
2 cm = ___ mm
Answer: 20 mm
Tip: 1 cm = 10 mm. Smaller units make a bigger count; bigger units make a smaller count.
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Common Core: 2.MD.A.2
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On paper: this skill is in the printable pack Grade 3 Common Core Math: Geometry and Measurement, with an answer key.
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