Video: Understanding That Division Is an Unknown-Factor Problem

Find the missing numbers. 5 × 8 = _. So, 40 ÷ 8 = _.

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Video Transcript

Find the missing numbers. Five multiplied by eight equals what? So, 40 divided by eight equals what?

Here, we have eight groups and each group has five counters. So this array shows five multiplied by eight. To help us find the total, we could count in fives: five, 10, 15, 20, 25, 30, 35, 40. Five multiplied by eight equals 40. If we take 40 and divide it into eight equal groups, each group contains five counters. So 40 divided by eight equals five.

Five multiplied by eight is 40 and 40 divided by eight equals five.

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