6×(89×5)=
36×25=
42×5×2=42(5×2)
25×16=25×4×
①(270+35×6)÷80
②13×[(295-45)÷5]
③2700÷25÷4
④88+88×99
⑤4.56-2.19+0.44
⑥98.2+(32.5-13.7)
400÷80= 12×70= 427÷7=
2.5+5= 27×5×4= 94-45=
50×40= 25×6= 240÷5=
540÷9÷6=