8×3=
7×7=
12+48=
28+2-20=
4×( )=28
31+( )=69
3×( )+3=21
①47+35=
②72-34=
③20+36+38=
④81-36-28=
⑤46+36-28=
⑥72-(38+16)=
6×7=
17-9=
4×8=
2×6=
8×3+4=
36+4=
4×9=
2×2=
19+57=
3×4+9=
5×6=
18+60=
9×3=
5×5=
38-18+25=
41-2=
6×9=
8×5=
7×4=
7×5-3=
□○□=□( )
买7条多少钱?
0.1×25×4= 22.9÷2.29= 8×12.5%= 4.5×=
9+1÷10= ++= ÷= (+)×20=