( )
①48+35=
②54-36=
③45+19+7=
④85-58=
⑤54-36+22=
⑥46+32-19=
90-47=
59+26=
37+46-54=
95-(34+25)=
43+57=
70-59=
83-25=
23+66-48=
60-45+26=
90-(31-17)=
20+80=
8+70=
90-30=
58-50=
16-7=
75-5=
58-50+20=
76+20-6=
8×7=
2×1=
6+6=
9×4+9=
5×6=
54﹣40=
7×5﹣7=
38﹣18+80=
8×3=
7×7=
12+48=
28+2-20=
4×( )=28
31+( )=69
3×( )+3=21