Question Video: Dividing Two-Digit Numbers by One-Digit Numbers by Counting Back on a Number Line Mathematics • 3rd Grade

Count back to find the missing number: 25 ÷ 5 = _.

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Video Transcript

Count back to find the missing number. 25 divided by five equals what.

In this question, we have to divide 25 by five. In other words, we have to work out how many fives there are in the number 25. And we’ve been given this number line to help. We can see the number line starts at zero and ends at 25. And we’re told we have to count back to find the missing number. We need to count back in fives to find out how many fives there are in 25. We need to start at 25 and count back in fives until we reach zero. Five less than 25 is 20. Five less than 20 is 15. 25, 20, 15, 10, five, zero.

How many times did we count back in fives? Five times. Now we know there are five fives in 25. 25 divided by five equals five. We counted back in fives from 25 to find the answer.

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