Multiplication

Multiplication

0, 1, 5, and 10

Multiplying by Zero

• The answer is ALWAYS zero.

• It does not matter how large or small the other number is; the answer is ALWAYS zero.

Multiple Choice

89 x 0 =

• 89

• 1

• 0

Multiple Choice

1 x 0 =

• 1

• 0

• 10

Multiple Choice

258921 x 0 =

• 0

• 258921

• 1

Multiplying by 1

• When you multiply by one, the answer is always the OTHER number.

• Unless, of course, you multiply 1 x 0, then the answer is 0.

• Does it matter how large or small the other number is?

Multiple Choice

598 x 1 =

• 1

• 598

• 0

Multiple Choice

11 x 1 =

• 11

• 1

• 1

Multiple Choice

1 x 0 =

• 1

• 0

• 2

Multiplying by 5

• Think of skip counting by 5's!

• Use your fingers when needed to skip count.

• 
  

Multiple Choice

Which skip counting is correct?

• 5, 10, 25, 35, 45, 60

• 5, 10, 15, 20, 25, 30, 35, 40

• 1, 5, 10, 21, 32, 45, 50

Multiple Choice

5 x 6 =

• 35

• 30

• 25

• 20

Multiple Choice

9 x 5 =

• 32

• 45

• 90

• 25

Multiple Choice

11 x 5 =

• 50

• 5

• 11

• 55

Multiplying by 10

• Skip count by 10's!

• An easy way to remember is to add a zero to the end!

Multiple Choice

10 x 3

• 10

• 3

• 33

• 30

Multiple Choice

10 x 6

• 6

• 60

• 10

• 66

Multiple Choice

10 x 11

• 100

• 110

• 10

• 11

Multiple Choice

10 x 5 =

• 5

• 10

• 55

• 50

Practice Problems!

Look carefully and take your time!!

Multiple Choice

9 x 5 =

• 32

• 45

• 90

• 25

Multiple Choice

11 x 1 =

• 11

• 1

• 1

Multiple Choice

10 x 12

• 100

• 110

• 120

• 12

Multiple Choice

1 x 5 =

• 1

• 5

• 50

• 6

Multiple Choice

10 x 0 =

• 10

• 100

• 0

• 1

Multiple Choice

5 x 2 =

• 7

• 50

• 10

• 12

Multiple Choice

10 x 10 =

• 10

• 120

• 100

• 1

Multiple Choice

7 x 1 =

• 1

• 70

• 17

• 7

Multiple Choice

8 x 10 =

• 10

• 8

• 18

• 80

Multiple Choice

8 x 5 =

• 40

• 13

• 5

• 45