5 multiply by 2 and 3

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MULTIPLY BY 2 AND 3

THIRD GRADERS2008MATH

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MULTIPLICATON TABLES

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Multiply With 2You can use different ways to multiply 5 2.

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PRACTICE

14 10 4

6 18 8

=18 =2 =6

=8 =14 =10

=12 =18 =16

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PRACTICE

4 X 2 = 8 2 X 2 = 4 5 X 2 = 10

4 10 8 14 2 18

6 14 12 20 16 10

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PRACTICE

18 6 12 8 16 2

=20 = 8 = 12 = 18 = 6

= 8 = 14 = 2 = 4 = 16

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PRACTICE

$ 6 cost all the boxes of candy

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PRACTICE

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TRY

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PROBLEM SOLVING

1. Tatiana buys two packages of balloons for her birthday party. How many balloons does she buy in all?

2. Vicente used two packages of kazoos to make party favor bags for his party. He put one kazoo in each bag and gave one bag to each guest. How many guests came to Vicente’s party

3. Reasoning Felicia buys two packages of a party favor. She now has 12 of those items in all. Which party favor did Felicia buy?

9 X 2 = 18

5 X 2 = 10

Trading Cards

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PROBLEM SOLVING4. A package of tattoos costs $3. A

package of stickers costs $4. Steve buys two packages of each. How much money does he spend in all?

5. What’s Wrong? Larry says that one package of balloons has twice as many party favors as one package of bubble makers. What’s wrong?

2 packages of tattoos x $3 = 6

2 packages of stickers x $4 =8

6 + 8 = $14

1 packages of balloons of 9

1 packages of bubble 4

It is not twice because 2X4=8 and the package has 9

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TEAM WORKDouble Dominoes: Write two multiplication sentences to describe each set of

dominoes. There is one set for which you can only write one sentence. Which set is it?

2 x 4 = 8

4 x 2 = 8

2 x 3 = 6

3 x 2 = 6

2 x 6 = 12

6 x 2 = 12

2 x 2 = 4

2 x 2 = 4

2 x 5 = 10

5 x 2 = 10

2 x 1 = 2

1 x 2 = 2

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TEAM WORK

4 x 2 = 8 1 x 2 = 2 6 x 2 = 12

4 8 14 18 16 6

18 16 10 20 12 2

6 10 14 8 12

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PRACTICE

2 X 7 = 14

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MULTIPLICATION TABLES

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Multiply With 3

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PRACTICE

0 9 15 12 3 18

27 6 24 15 30 21

18 9 24

0 30 27

3 21 12

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PRACTICE

12 15 0 18 9 27

24 3 21 30 12 6

9 3 15

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19

PRACTICE

30 6 18

2 eggs X 6 0melets = 12 eggs

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PRACTICE

18 6 21 12 0

27 15 3 24 9

21 24 15

30 3 6

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PRACTICE

3 X 4=12

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Mayan Multiplication

The Maya lived in the rain forest regions of Central America about 3,000 years ago. The Mayan number system included only three symbols, shown below.

To write any number, the Maya combined the symbols for 1 and/or 5.

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Mayan Multiplication

Use our number system to write each Mayan multiplication problem as a multiplication sentence with its product.

3 x 7 = 21 10 x 3 = 30

4 x 3 = 12 3 x 5 = 15

3 x 8 = 24 3 x 9 = 27

3 x 3 = 9 6 x 3= 18