Multiplying by 10

When we multiply by 10 we are making the number ten

times bigger.

L.O. - Multiply an integer up to 1000 by 10; understand the effect.

Th h t u

1 1 1 1

x10x10x10

In the decimal system, each column has numbers 10 x bigger than the next one

110100

1000

Th h t u

x10

Let’s try it with another number!

33 0

x10

3 0 0

x10

3 0 0 0

Th h t u

66 0

x10

If we multiply 6 by ten it will move into the next column

We must put a 0 in the empty units column to hold the place – 6 x 10 = 60

Let’s try with some other numbers

20200

330

23 x 10 = 230

Th h t u

2 3

Don’t forget to add the zero in the empty column!

Let’s try these together!

48 x 10 =

93 x 10 =

134 x 10 =

256 x 10 =

889 x 10 =

480

930

1340

2560

8890

Were you right?

Th h t u

66 0 0

If we multiply 6 by a hundred it will move up two columns

We must put a 0 in the empty columns to hold the place – 6 x 100 = 600

Let’s try these together!

8 x 100 =

15 x 100 =

28 x 100=

134 x 100 =

267 x 100 =

800

1500

2800

13400

26700

Were you right?

Now you are going to try some yourselves!