NumberKS3 / GCSE

Long multiplication

Multiply a whole number by a two-digit number.

  • First multiply by the ones digit.
  • Then multiply by the tens, including the zero placeholder.
  • Add the two partial products in aligned columns.

Example 1

Calculate using a written method.

Line up equal place values.

Multiply by the ones digit.Multiply by the tens, including the zero placeholder.

Example 2

Calculate using a written method.

Line up equal place values.

Multiply by the ones digit.Multiply by the tens, including the zero placeholder.

Remember
Use the diagrams to track each step, then check your answer.

Your turn

Question 1

Calculate using a written method.

Check answer

Line up equal place values.

Multiply by the ones digit.Multiply by the tens, including the zero placeholder.
Question 2

Calculate using a written method.

Check answer

Line up equal place values.

Multiply by the ones digit.Multiply by the tens, including the zero placeholder.
Question 3

Calculate using a written method.

Check answer

Line up equal place values.

Multiply by the ones digit.Multiply by the tens, including the zero placeholder.
Question 4

Calculate using a written method.

Check answer

Line up equal place values.

Multiply by the ones digit.Multiply by the tens, including the zero placeholder.
Question 5

Calculate using a written method.

Check answer

Line up equal place values.

Multiply by the ones digit.Multiply by the tens, including the zero placeholder.
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