Addition
6 + 9
15
16 - 5
11
1 ten and 4 ones
14
10, 22, 54, 72
Even Numbers
11 + 8
19
20 - 6
14
2 tens 7 ones
27
11, 29, 45, 67
Odd numbers
15 + 6
21
23 - 9
14
4 tens 6 ones
46
21, 35, 49, 57
Odd Numbers
20 + 9
29
27 - 8
19
8 tens 8 ones
88
13, 28, 36, 58, 77
Odd & Even numbers
25 + 7
32
32 -9
23
9 tens 9 ones
99
15, 22, 37, 48, 62
Odd & Even Numbers