Video: KS2-M16S • Paper 1 • Question 31

20 − 4 × 2 = _.

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Video Transcript

20 subtract four multiplied by two equals what?

We may think that we need to calculate 20 take away four which is 16 and then multiply 16 by two which is 32. But this answer would be incorrect.

To answer the question correctly, we need to remember the order of operations. Multiplication and division come before addition and subtraction.

So our first step is to calculate four multiplied by two, which is eight. Then, we subtract the eight from 20, which gives us 12.

20 subtract four multiplied by two equals 12.

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