数学题

主页

1.
7 - 14 = 35 30 40 -7

2.
20 - 11 = 25 14 9 37

3.
2 + 19 = 26 8 14 21

4.
3 - 18 = 9 -15 31 10

5.
10 - 6 = 4 22 27 38

6.
9 + 19 = 28 9 31 13

7.
13 - 18 = 13 30 -5 3

8.
10 + 15 = 36 34 25 13

9.
2 - 20 = 39 -18 5 9

10.
7 - 18 = 25 -11 21 33