adding
350+400
750
21-45
-14
9x3
27
8/4
2
23+67
90
500+2039
2539
283-34
249
5x5
25
9/3
3
90-60
30
192+825
1017
193-204
-11
3x7
21
22/2
11
6x5
30
100,000+200,000,000,000
200,000,100,000
1067-67
1000
4x8
32
21/3
7
66/3
22
45000-40000
5000
2000-800
1200
10x12
120
444/222
2
25+93-33x7/2
2.5