| 1.   8 + 2 × 6 − 
3 − 4 = 13 | 2.   8 × 1 × 
2 + 9 − 3 = 22 | 
| 3.   5 + 9 + 2 + 3 + 
9 = 28 | 4.   2 × 8 × 
2 = 32 | 
| 5.   3 − 9 + 4 
= -2 | 6.   7 × 9 × 
3 = 189 | 
| 7.   5 − 6 − 
8 × 7 = -57 | 8.   9 × 9 × 
7 = 567 | 
| 9.   8 − 6 × 
5 = -22 | 10.   8 × 6 × 
7 × 5 + 3 = 1683 | 
| 11.   9 + 8 − 8 
× 6 × 9 = -415 | 12.   1 × 4 − 
3 + 9 = 10 | 
| 13.   8 + 5 − 7 
+ 2 × 6 = 18 | 14.   5 − 7 + 3 
− 8 + 6 = -1 | 
| 15.   6 × 1 + 3 
+ 9 − 2 = 16 | 16.   6 − 3 × 
6 + 5 = -7 | 
| 17.   1 − 7 + 6 
= 0 | 18.   7 × 3 − 
5 = 16 | 
| 19.   5 − 8 − 
1 × 3 = -6 | 20.   7 × 4 − 
1 × 3 = 25 |