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Millimeters to Centimeters worksheet

Grades 4–5 · CCSS 4.MD.A.1, 5.MD.A.1

Solve each problem and show your work. Round answers to 2 decimal places where needed.

1.
Problem 1.
- Value to convert: 26
- Direction: Centimeters → Millimeters
Find: In millimeters
Answer
2.
Problem 2.
- Value to convert: 28
- Direction: Millimeters → Centimeters
Find: In centimeters
Answer
3.
Problem 3.
- Value to convert: 21
- Direction: Millimeters → Centimeters
Find: In centimeters
Answer
4.
Problem 4.
- Value to convert: 20
- Direction: Millimeters → Centimeters
Find: In centimeters
Answer
5.
Problem 5.
- Value to convert: 18
- Direction: Millimeters → Centimeters
Find: In centimeters
Answer
6.
Problem 6.
- Value to convert: 22
- Direction: Centimeters → Millimeters
Find: In millimeters
Answer
7.
Problem 7.
- Value to convert: 24
- Direction: Centimeters → Millimeters
Find: In millimeters
Answer
8.
Problem 8.
- Value to convert: 22
- Direction: Millimeters → Centimeters
Find: In centimeters
Answer
9.
Problem 9.
- Value to convert: 32
- Direction: Millimeters → Centimeters
Find: In centimeters
Answer
10.
Problem 10.
- Value to convert: 36
- Direction: Centimeters → Millimeters
Find: In millimeters
Answer

Answer key: Millimeters to Centimeters worksheet

1. In millimeters: 260 mm
1. Start with the conversion factor: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. Multiply your centimeters by 10 to get millimeters
  $26 cm \times 10$ $= 260 mm$
2. In centimeters: 2.8 cm
1. The official definition goes the other way: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. So divide your millimeters by 10 to get centimeters
  $\frac{28 mm}{10}$ $= 2.8 cm$
3. Or multiply by 0.1 instead. It gives the same answer, because 1 ÷ 10 = 0.1
  $28 mm \times 0.1$ $= 2.8 cm$
3. In centimeters: 2.1 cm
1. The official definition goes the other way: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. So divide your millimeters by 10 to get centimeters
  $\frac{21 mm}{10}$ $= 2.1 cm$
3. Or multiply by 0.1 instead. It gives the same answer, because 1 ÷ 10 = 0.1
  $21 mm \times 0.1$ $= 2.1 cm$
4. In centimeters: 2 cm
1. The official definition goes the other way: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. So divide your millimeters by 10 to get centimeters
  $\frac{20 mm}{10}$ $= 2 cm$
3. Or multiply by 0.1 instead. It gives the same answer, because 1 ÷ 10 = 0.1
  $20 mm \times 0.1$ $= 2 cm$
5. In centimeters: 1.8 cm
1. The official definition goes the other way: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. So divide your millimeters by 10 to get centimeters
  $\frac{18 mm}{10}$ $= 1.8 cm$
3. Or multiply by 0.1 instead. It gives the same answer, because 1 ÷ 10 = 0.1
  $18 mm \times 0.1$ $= 1.8 cm$
6. In millimeters: 220 mm
1. Start with the conversion factor: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. Multiply your centimeters by 10 to get millimeters
  $22 cm \times 10$ $= 220 mm$
7. In millimeters: 240 mm
1. Start with the conversion factor: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. Multiply your centimeters by 10 to get millimeters
  $24 cm \times 10$ $= 240 mm$
8. In centimeters: 2.2 cm
1. The official definition goes the other way: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. So divide your millimeters by 10 to get centimeters
  $\frac{22 mm}{10}$ $= 2.2 cm$
3. Or multiply by 0.1 instead. It gives the same answer, because 1 ÷ 10 = 0.1
  $22 mm \times 0.1$ $= 2.2 cm$
9. In centimeters: 3.2 cm
1. The official definition goes the other way: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. So divide your millimeters by 10 to get centimeters
  $\frac{32 mm}{10}$ $= 3.2 cm$
3. Or multiply by 0.1 instead. It gives the same answer, because 1 ÷ 10 = 0.1
  $32 mm \times 0.1$ $= 3.2 cm$
10. In millimeters: 360 mm
1. Start with the conversion factor: 1 cm is exactly 10 mm
  $1 cm$ $= 10 mm$
2. Multiply your centimeters by 10 to get millimeters
  $36 cm \times 10$ $= 360 mm$