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96﹣69=
6.5×20=
1﹣=
+=
0.54÷0.9=
×=
÷=
÷0.25=
,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( )
1- - = × = 0.1÷10%= 0.7+ =
3.6×99+3.6= 0.24×5= ÷ = 0.23=
×30= 46÷ = 3× = 2÷ =
÷ = 100×1%= 6.25-3.2= 5.7+11.8+4.3=
a+0.3a= 0.13= 101×99≈ 2.7×0.25×0.4=