10 in a line
2 x 10
20
40 x 100
4000
Double of 10
20
3 x 4 = 4 x 3 Why?
300 x 20
6000
30 x 10
300
60 x 100
6000
Double of 30
60
52 x 38 = 38 x 52
Identify the multiplication property
420 x 20
8400
50 x 10
500
50 x 100
5000
Double of 50
100
30 x 20
600
100 x 300
30,000
82 x 10
820
37 x 100
3700
Double of 400
800
45 x 2
90
600 x 20
12,000
120 x 10
1200
98 x 100
9800
Double of 150
300
52 x 2
104
520 x 20
10,400