15×= += -= +×=
÷14= 10÷= ×= ÷×=
×= ÷= 0.6×= 0×÷=
①
②
③
④
⑤
⑥
⑦
⑧
(5) ()
×15= ×2= × = × =
÷ = ÷3= ÷5= ÷ =
0.37+1.8=
0.25×8=
5.1÷0.3=
1-7÷7=
1.25×4×8=
6.2-2.15
,如果四年级人数是180人,那么五年级人数是人。
方法不合理的同学是( )
× = 4÷0.8= 3﹣ = 0.23=
÷ = 786﹣298= 25×0.7×4= 8.7+7=
( ﹣0.375)÷ = × ÷ × =
3.14×8= ÷37.5%=