Basic Math Facts
1 x 5
5
7 x 10
70
13 x 1
13
52 x 10
520
The strategy used to multiply where you make groups.
Grouping or Grouping strategy
2 x 5
10
10 x 70
700
14 x 2
28
12 x 16
192
The strategy used when you make rows and columns to multiply numbers. Think Cheez-its.
Array or Array Strategy
3 x 7
21
2 x 200
400
21 x 5
105
42 x 62
2604
The strategy used when creating boxes to multiply. You find the expanded form of numbers.
Area Model or Box Method
8 x 6
48
8 x 300
2400
63 x 3
189
50 x 68
3400
624 in expanded form.
600 + 20 + 4
9 x 8
72
9 x 5000
45000
95 x 4
380
65 x 46
2990
3659 in expanded form.
3000 + 600 + 50 + 9