Question

Use mental math to figure out

1. 28+ 65.

2. 14+ 6+ 57

3. 80 + 40 + 170

4. 432 +250

5. 82 - 37

6. 1245 - 320

7. 532 - 116

Answer 1

1) 94
2) 77
3) 290
4) 682
5) 45
6) 925
7) 416