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Multiplication 2 digit concept intro

This math skill teaches how to multiply a two-digit number by a one-digit number by breaking the two-digit number into tens and units. It demonstrates using groups and skip counting to simplify the multiplication process by separating the problem into more manageable parts and then adding the results.

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Teaching Transcript

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How can we multiply 13 times 5

Even for larger numbers, it's still equal to 13 groups with each group having 5 items in it

But let's look at the 13 groups as being 10 groups of 5 items, and then another 3 groups of 5 items

For the 3 groups, we can add them up individually and see that 3 groups of 5 is 15.

Notice that we're skip counting by 5s, so let's try that 10 times to see what 10 groups of 5 is. We can see that it's 50

So ten groups of 5 is 50, and 3 groups of 5 is 15. We need both of those for our answer.

So we can add them together. 50 plus 15 is 65

Which means that 13 times 5 is equal to 65.

Skill Practice

Multiplication 2 digit concept intro

Test your understanding of multiplication 2 digit concept intro by practicing it! Work through the below exercises to use it in practice.