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Maths

Multiplication and division

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Multiplication

To multiply 237 by 4 without using a calculator, you can set it out like this:

237 multiplied by 4 equals 948
  1. Start with 4 × 7, which is 28, so write the 8 and carry the 2 to the tens column.

  2. 4 × 3 = 12, but remember to add the carried 2 to get 14. Write the 4 and carry the 1 to the hundreds column.

  3. 4 × 2 = 8, and we add the carried 1 to get 9.

Therefore 237 × 4 = 948

This method is called short multiplication.

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