multiplying tu by u

Multiplying TU by U

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How can we use a multiplication grid to help us solve this word

problem?

Sam had 6 packets of balloons for his party.

Each packet contained 38 balloons.

How many balloons would Sam have to blow up altogether?

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What would the calculation look like?

38x6=What would the approximate answer be?

40x6=240

We know that 4x6=24 so……

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38 x 6 =

30

6

8

228

18048+

120100

228

180 48 8

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Now your turn

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34 x 6 =

30

What number goes here?

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34 x 6 =

30

What number goes here?

4Next Next SlideSlide

34 x 6 =

30

What number goes here?

4

6

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34 x 6 =

30

When you multiply 6 x 30 what number goes here?

4

6 180

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34 x 6 =

30

When you multiply 6 x 4 what number goes here?

4

6 180 24

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34 x 6 =

30

Now add 180 and 24 what number goes here?

4

6 180 24

180

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34 x 6 =

30

Now add 180 and 24 what number goes here?

4

6 180 24

18024+

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34 x 6 =

30

Now add up the units:

4 + 0 = ?

4

6 180 24

18024+ 4

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34 x 6 =

30

Now add up the tens:

20 + 80 = ?

4

6 180 24

18024+ 4

100

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34 x 6 =

30

Now add up the hundreds: 100 + 0 = ?

4

6 180 24

18024+ 4

100100

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34 x 6 =

30

Now add everything up.

4

6 180 24

18024+ 4

100100204

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Try this one on your own now:

36 x 4 =

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I really understand this and I got most of them correct.

I am beginning to understand this and I got many of them correct.

I need more practice to help me understand this and I made lots of mistakes.A

B

C

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