123+657
780
5,445-456
4,999
9x4
36
1,345+321
1,666
4,563-3451
1112
42x4
168
42,364+32,125
74,489
13,546+6,460=
20,006
3,964-2,154
1,810
55x3
165
432x435
187,920
64,455-54,633
9,822