Question

1) -3.5 + 8.1
2) -2.9-3.6
3)-7.5+2.8
4) 4.5-8.3

Answer 1

1) -3.5 + 8.1=4,6
2) -2.9-3.6=-(2,9+3,6)=-6,5
3)-7.5+2.8=-(7,5-2,8)=-4,7
4) 4.5-8.3=-(8,3-4,5)=-3,8