95+=297
137+=388
156+=403
164-31=
336-128=
405-278=
165+126=
83+267=
137+355=
5×7=
6×4=
8×9=
56÷7=
18÷2=
36÷=

-121=278-105
56+89+61+218=
347-218=+152
118+68+146-302=
83++44=174
166+108-57-182=
238+-128=293
500-128-264-84=