L.O. - Multiply an integer up to 1000 by 10; understand the effect.
Multiplying by 10
When we multiply by 10 we are
making the number ten times
bigger.
In the decimal system, each column has
numbers 10 x bigger than the next one
x10
x10
x10
Th
h
t
u
1
1
1
1
1000
100
10
1
Let’s try it with another number!
x10
x10
x10
Th
h
t
u
3
03
03 0
30
If we multiply 6 by ten it will move into the
next column x10
Th
h
t
u
6
6
0
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
Th
h
200
t
u
2
3
20
30
3
Don’t forget to add the zero in the empty
column!
23 x 10 = 230
Let’s try these together!
48 x 10 =
480
93 x 10 =
930
134 x 10 =
1340
256 x 10 =
2560
889 x 10 =
8890
Were you right?
If we multiply 6 by a hundred it will move up
two columns
Th
h
6
t
u
0
6
0
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 =
800
15 x 100 =
1500
28 x 100=
2800
134 x 100 =
13400
267 x 100 =
26700
Were you right?
Now you are going to try some yourselves!