49+31-52= 99-63+36=
35-(40-5)= 76-(39+28)=
4×7=
98-45=
22×0=
8×5=
3×4+4=
56+36=
81÷9=
18-6-6=
①65+8
②83-19
③23+65
④64- 18+25
⑤90 -25 – 27
⑥71- (51 -6)
31+24+19=
100-18-24=
65+12-13=
0.68+19.6= = 0.56÷0.4= 0.125×8=
12= 0.22×200= 100﹣0.86= =