Answers

2015-08-11T21:36:26+08:00
1.53-25= 28
2.(-6) - 123 = -129
3.(-4)-(-9) = 5
4.6-15= -9
5.16-(20)= -4
6.25-43= -18
7. (-30)-(20)= -50
8. (-19)-2= -21
9. 30-(-9)= 39
10. (-19)-(-15)= -4
0