5+40
45
10-2
8
10:2
5
10.10
100
200+8
208
20+7
27
20-4
16
20:5
4
7.3
21
100-6
94
33+7
40
50-16
34
30:6
8.5
20:2
10
40+9
49
80-36
44
60:20
3
81.6
486
200.4
400
500+600
1100
100-99
1
100:200
200
100.8
800
50.27
1350