How many groups are there?

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Presentation transcript:

How many groups are there? How many are in each group? How can I find out how many in all? (write an equation)

There were 3 groups. There were 6 in each group. I can find the total by multiplying 3 and 6. 3x6=18

How many groups are there? How many are in each group? How can I find out how many in all? (write an equation)

There were 3 groups. There were 6 in each group. I can find the total by multiplying 3 and 6. 3x6=18

What do these 2 problems have in common? What do they communicate?

How many groups are there? How many are in each group? How can I find out how many in all? (write an equation)

There were 2 groups. There were 5 in each group. I can find the total by multiplying 2 and 5. 2x5=10

How many groups are there? How many are in each group? How can I find out how many in all? (write an equation)

There were 5 groups. There were 2 in each group. I can find the total by multiplying 5 and 2. 5x2=10

What do these 2 problems have in common? What do they communicate?

Multiplication problems are the same backwards and forwards! The Big Idea Multiplication problems are the same backwards and forwards!