| Addition | Subtraction | Tens and ones | Easy addition |
|---|---|---|---|
|
70
35+35
|
0
1-1
|
8
4+4
|
|
|
40
20+20
|
2
6-4
|
5
.....
|
12
6+6
|
|
10
4+6
|
20
25-5
|
8
5+3
|
|
|
42
21+21
|
8
16-8
|
9
5+4
|
|
|
12
1+11
|
1
12-11
|
5
1+4
|
|
Support Us on Ko-fi