Doubling 3, 6, and 12 Fact Sets Flashcards
This deck uses doubling to solve 6 and 12 facts. NOTICE in the answers that one side of an equation is cut in half and the other side is doubled.
1
Q
6 x 1 =
double (3 x 1)
A
3 x 2 = 6
OR
3 + 3
2
Q
6 x 2 =
double (3 x 2)
A
3 x 4 = 12
OR
6 + 6
3
Q
6 x 3 =
double (3 x 3)
A
3 x 6 = 18
OR
9 + 9
4
Q
6 x 4 =
double (3 x 4)
A
3 x 8 = 24
OR
12 x 2 = 24
5
Q
6 x 5 =
double (3 x 5)
A
3 x 10 = 30
OR
15 + 15 = 30
6
Q
6 x 6 =
double (3 x 6)
A
3 x 12 = 36
OR
18 + 18 = 36
7
Q
6 x 7 =
double (3 x 7)
A
3 x 14 = 42
OR
21 + 21 = 42
8
Q
6 x 8 =
double (3 x 8)
A
3 x 16 = 48
OR
12 x 4 = 48
9
Q
6 x 9 =
double (3 x 9)
A
3 x 18 = 54
OR
27 + 27 = 54
10
Q
6 x 10 =
double (3 x 10)
A
3 x 20 = 60
OR
12 x 5 = 60
11
Q
6 x 11 =
double (3 x 11)
A
3 x 22 = 66
OR
33 + 33 = 66
12
Q
6 x 12 =
double (3 x 12)
A
3 x 24 = 72
OR
12 x 6 = 72
13
Q
12 x 1 =
double (6 x 1)
A
12 x 1 = 12
OR
6 + 6 = 12
14
Q
12 x 2 =
double (6 x 2)
A
6 x 4 = 24
OR
12 + 12 = 24
15
Q
12 x 3 =
double (6 x 3)
A
6 x 6 = 36
OR
18 + 18 = 36
