Worksheet: Mental Multiplication: Doubling and Halving

In this worksheet, we will practice using doubling and halving to multiply two numbers.


Victoria knows a strategy to multiply by making easier calculations with the same answer.

Use her strategy to find the missing numbers.


Multiplying by 2 and 10 is easy!

Let’s rewrite this expression to make it easier.

Which of these is equal to 14×5?

  • A6×10
  • B7×10
  • C10×10
  • D12×10

What is 14×5?

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