1. Place Value and Multiplication
millions
thousands
100 10 1
Before the decimal point .
After the decimal point
1000
100 10 1
1/10
1/100
1/1000
1/10000

2. Place Value & X by 10 3 2 0 7 8, 9 5 0 millions thousands 100 10 1 3 27, 8 9 5
7 8,

3. Place Value & X by 10 2 3 4, 5 6 0 8 9 0, 1 2 3, 4 5 0 millions
thousands
100 10 1 2 3, 4 5 6 8 9, 2, 3 ,
, ,

4. After the decimal point
Place Value & X by 10
thousands
After the decimal point
100 10 1 .
1/10
1/100 8 2 3
8 . 2

5. When you multiply by ten
The answer gets bigger
The decimal point moves to the right one place or the numbers move one place to the left 4 6 . 5 . 9 2 3 .

6. Multiply by 10 -
The answer gets bigger
3.52 x 10 =
35.2
4.209 x 10 =
42.09
0.6
0.06 x 10 =
x 10 =
0.086

7. Place Value & X by 100 3, 2 0 0 7 8 9, 5 0 0 millions thousands 100 107, 8 9 5 3, ,

8. Place Value & X by 100 3 4 5, 6 0 0 9 0 1, 2 3 4, 5 0 0 millions
thousands
100 10 1 3, 4 5 6 9, 2, 3 ,
, ,

9. When you multiply by a hundred
The answer gets bigger
The decimal point moves to the right two places or the numbers move two places to the left 2 . 8 4 6 . 5 9 . 3 2 2 8 8

10. Multiply by 100
6 x 100
12 x 100
25 x 100
64 x 100
= 600
13.5 x 100
= 1350
= 1200
4.23 x 100
= 423
= 2500
0.16 x 100
= 16
= 6400
0.063 x 100
= 6.3

11. When you multiply by a thousand
The answer gets bigger
The decimal point moves to the right three places or the numbers move three places to the left 2 . 3 5 . 4 6 5 9 . 3 2 3 2 5 2 3 3 5 5

12. Multiply by 1000
6 x 1000
12 x 1000
25 x 1000
64 x 1000
= 6,000
13.5 x 1000
= 13,500
= 12,000
4.23 x 1000
= 4,230
= 25,000
0.16 x 1000
= 160
= 64,000
0.063 x 1000
= 63

13. When multiplying by 10,100,1000- I know that the number gets bigger
The place value of each digit is changing or
the decimal point is moving
101 =10
102 =10 x 10 =100
103 =10 x 10 x 10 =1000
104 = 10 x 10 x 10 x 10=10000
Can I do this multiply by just looking at it?