Video: KS2-M18 • Paper 1 • Question 21

20% of 1,200 = _.

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Video Transcript

20 percent of 1200 equals what?

One way to find 20 percent of 1200 would be first to find one percent and then multiply this by 20 to find 20 percent. To find one percent, we need to divide 1200 by 100, which is 12. One percent of 1200 is 12. We need to multiply 12 by 20 to find 20 percent. 12 times 10 is 120. 20 times 10 is 240.

Another way to find 20 percent of 1200 would be to first find 10 percent and then double the answer. To find 10 percent, we need to divide 1200 by 10. So 10 percent of 1200 is 120. To find 20 percent, we need to double 120, which is 240.

We used two different methods to find the answer. First, we found one percent of 1200 and multiplied this by 20. And in the second method, we found 10 percent of 1200 and doubled it. Both gave us the correct answer of 240.

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