Multiplication Fact Strategies
Multiply by 0: Any number multiplied by 0 is 0 because you would have no
sets/groups
0 X 1
1 X 0
0 X 4
4 X 0
0 X 7
7 X 0
0 X 2
2 X 0
0 X 5
5 X 0
0 X 8
8 X 0
0 X 3
3 X 0
0 X 6
6 X 0
0 X 9
9 X 0
Multiply by 1: Any number multiplied by 1 equals that number because it is just one
group/set
1 X 1
1 X 1
1 X 4
4 X 1
1 X 7
7 X 1
1 X 2
2 X 1
1 X 5
5 X 1
1 X 8
8 X 1
1 X 3
3 X 1
1 X 6
6 X 1
1 X 9
9 X 1
Multiply by 2: (Doubles) Any number times 2 is a double (that number plus itself).
Example: 6 X 2 = 6 + 6 =12
2 X 2
2 X 2
2 X 4
4 X 2
2 X 7
7 X 2
2 X 3
3 X 2
2 X 5
5 X 2
2 X 8
8 X 2
2 X 6
6 X 2
2 X 9
9 X 2
Multiply by 5's and 10's: (Use Counting): Skip count the number of 5's or 10's you
are multiplying
Example: 4 X 5 (think…5, 10, 15, 20) Or 3 X 10 (think…10, 20, 30)
5 X 3
3 X 5
5 X 8
10 X 3
3 X 10
10 X 8
5 X 4
4 X 5
5 X 9
10 X 4
4 X 10
10 X 9
5 X 5
5 X 5
8 X 5
10 X 5
5 X 10
8 X 10
5 X 6
6 X 5
9 X 5
10 X 6
6 X 10
9 X 10
5 X 7
7 X 5
10 X 7
7 X 10
Multiply by 4's and 8's: Double-double's and Double-Double-Double
X4: Double-double - Since 4 X 6 is like 6 + 6 + 6 + 6, you can double the 6's to get
12 + 12, then Double the 12's to get 24. Anything X 4 is a double-double.
X8: Double-double-double - Since 8 X 6 is like 6 + 6 + 6 + 6 + 6 + 6 + 6 + 6 then
you can double the 6's to get 12 + 12 + 12 + 12, then double the 12's to get 24 + 24,
then double the 24's to get 48. Anything X 8 is a double-double-double!
Double Doubles
Double-double-double's
4 X 4
4 X 4
4 X 8
8 X 4
8 X 6
6 X 8
4 X 5
5 X 4
4 X 9
9 X 4
8 X 7
7 X 8
4 X 6
6 X 4
8 X 4
4 X 8
8 X 8
8 X 8
4 X 7
7 X 4
8 X 5
5 X 8
8 X 9
9 X 8
Multiply by 3. 6. 9: Counting up or back
X3: Multiplying by three is like multiplying by 2, then adding one more set.
Example: 3 X 7 (think 2 X 7 is 14, another 7 is 21)
X6: Multiplying by 6 is like multiplying by 5, then adding one more set.
Example: 6 X 7 (think 5 X 7 is 35, one more 7 is 42)
X 9: Multiplying by 9 is like multiplying by 10 then taking one set away.
Example: 4 X 9 (think 4 X 10 would be 40, take away a four is 36)
3 X 4
4 X 3
6 X 4
4 X 6
9 X 4
4 X 9
3 X 5
5 X 3
6 X 5
5 X 6
9 X 5
5 X 9
3 X 6
6 X 3
6 X 6
6 X 6
9 X 6
6 X 9
3 X 7
7 X 3
6 X 7
7 X 6
9 X 7
7 X 9
3 X 8
8 X 3
6 X 8
8 X 6
9 X 8
8 X 9
3 X 9
9 X 3
6 X 9
9 X 6
9 X 9
9 X 9
Left Over Fact:
7 X 7