Video: KS1-M19 • Paper 1 • Question 14

64 − 11 = _.

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Video Transcript

64 take away 11 equals what.

We’re subtracting a two-digit number from a two-digit number. The six digit in the number 64 is worth six tens, which is 60. And the four digit is worth four ones. We can make the number 64 using six tens and four ones. The number 11 has one ten and one one. We need to take away a ten and a one from number 64. Let’s start with the ones. We’ve got four. And we need to take away one. Now, we have three ones. Now, let’s take away the ten. Now we have five tens. 64 take away 11 equals 53.

We can use our knowledge of tens and ones to help us subtract mentally, using a number line. We need to start at number 64. First, we can take away 10 or count back 10. 64 count back 10 takes us to 54. Now, all we have to do is take away the one. 54 take away one is 53. 64 take away 11 equals 53. We used our knowledge of tens and ones to help us work out the answer.

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