乘法算式:或
35+2770 71-2571-28
例:四七二十八 八九七十二
28+72=100 +=100
6×>46 60<9×
29-17=
23+29=
6×4=
6×4-8=
50-35=
18+25=
3×5=
5×7-3=
60+17-( )=28
( )×9-6=57
①53+34=
②76-42=
③19+49=
④78-38-13=
⑤33+26+18=
⑥91-(63+19)=
○+○+△+△+△=34
○+○+○+△+△+△+△=47
○+ △= △=
( )厘米