①64×89
②90×23
③88×95
④36.78+2.6
⑤7.7-6.1
⑥12-5.5
8÷2=
7÷7=
80÷2=
70÷7=
800÷2=
700÷7=
8000÷2=
7000÷7=
804÷4= 9.7-3.5=0÷57= 40×32 =
1- = 305-48= 15×6= 180-80÷5=
30×40=
16×14=
20×50=
32×30=
11×29=
24×5=
80+90=
412÷4=
25×4×3=
35×5×6=
①32×23=
②16×21=
③750÷5=
④615÷3=
①390÷3=
②840÷6=
③*245÷7=
④416÷4=
⑤528÷4=
⑥*353÷5=
①27×45=
②16.7+23.8=
③26-3.9=
④817÷4=
⑤※421÷7=验算: