Doubles Facts
2+2
4
5+_
What does the 1 mean in 91?
1 one
What is 3+3+1?
7
What is 40+40?
80
5+5
10
1+_
What does the 8 mean in 83?
8 tens or 80
What is 7+0+2?
9
What is 10+80?
90
8+8
16
6+_
4
What does the 5 mean in 45?
5 ones
What is 5+2+5?
12
What is 51+11?
62
11+11
22
3+_
What does the 7 mean in 73?
7 tens or 70
What is 6+4+8?
18
What is 42+9?
51
20+20
40
2+_
8
What does the 9 mean in 99?
9 tens, 90, or 9 ones
What is 10+10+9?
29
What is 63+29?
92