Working - BB - 1 Lesson 3

Putting the same number of objects into several groups and finding the total

Adding different numbers together to get a sum

Subtracting numbers from each other

Dividing a number into unequal parts

3, 6, 9, 12, 15, 18, 21, 24, 27, 30

3, 5, 7, 9, 11, 13, 15, 17, 19, 21

3, 6, 12, 15, 18, 21, 24, 27, 30

3, 9, 12, 15, 18, 21, 24, 27, 30

3 x 5 = 15

5 x 3 = 15

15 x 1 = 15

1 x 15 = 15

3 groups, 4 in each group

4 groups, 3 in each group

2 groups, 6 in each group

6 groups, 2 in each group

7 x 2 = 14

2 x 7 = 14

7 x 3 = 21

2 x 8 = 16

Addition is repeated to form multiplication.

Multiplication is repeated to form addition.

Addition and multiplication are unrelated.

Multiplication is used only for groups of 10.

To practice making equal groups, a key concept in multiplication.

To make the classroom quieter.

To prepare for a science experiment.

To choose teams for a game.

Factors

Multiples

Products

Divisors

4

5

6

8

6 x 3 = 18

3 x 6 = 18

7 x 3 = 21

5 x 3 = 15

4 is number of groups, 8 is size of each group

8 is number of groups, 4 is size of each group

32 is number of groups, 4 is size of each group

8 is number of groups, 32 is size of each group

4 is the number of groups

3 is the product

12 is the product

3 is the size of each group