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Grade 3 · Math

Convert centimeters to millimeters

Use ten millimeters for every centimeter.

8 generated examples + worked example

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Worked example

Convert 6 centimeters to millimeters.

Answer & why

Answer: 60

6 × 10 = 60 millimeters.

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Try these examples

8 reproducible examples from this math generator. Choose New examples for another set.

Question 1

Convert 12 centimeters to millimeters.

  1. 140
  2. 120
  3. 100
  4. 110
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 120

1 centimeter equals 10 millimeters, so 12 × 10 = 120 millimeters.

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Question 2

Convert 1 centimeter to millimeters.

  1. 0
  2. 10
  3. 30
  4. 40
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 10

1 centimeter equals 10 millimeters, so 1 × 10 = 10 millimeters.

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Question 3

Convert 9 centimeters to millimeters.

  1. 130
  2. 110
  3. 90
  4. 120
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 90

1 centimeter equals 10 millimeters, so 9 × 10 = 90 millimeters.

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Question 4

Convert 3 centimeters to millimeters.

  1. 20
  2. 40
  3. 70
  4. 30
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 30

1 centimeter equals 10 millimeters, so 3 × 10 = 30 millimeters.

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Question 5

Convert 6 centimeters to millimeters.

  1. 70
  2. 90
  3. 60
  4. 50
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 60

1 centimeter equals 10 millimeters, so 6 × 10 = 60 millimeters.

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Question 6

Convert 8 centimeters to millimeters.

  1. 120
  2. 110
  3. 90
  4. 80
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 80

1 centimeter equals 10 millimeters, so 8 × 10 = 80 millimeters.

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Question 7

Convert 10 centimeters to millimeters.

  1. 100
  2. 90
  3. 130
  4. 140
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 100

1 centimeter equals 10 millimeters, so 10 × 10 = 100 millimeters.

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Question 8

Convert 2 centimeters to millimeters.

  1. 50
  2. 40
  3. 30
  4. 20
A hint

Multiply by the number of smaller units in one larger unit.

Answer & why

Answer: 20

1 centimeter equals 10 millimeters, so 2 × 10 = 20 millimeters.

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