下面各题,怎样简便就怎样算.12÷0.4÷ ÷9+× ÷[(﹣)+(﹣)]24×(++) 80×÷× 1.8×+1.2×﹣.
直接写出得数651﹣105= 0.65+2.35= 0.1×0.03= (0.27+0.9)÷0.9=2﹣= = 64÷0.08= == = 10﹣﹣0.875 =
直接写出下面算式的结果830﹣250= 0.34+0.66= 30﹣19.7= 6×1=0.4×0.6= 1+= 8.7÷100= 1÷=7﹣3= (﹣)÷21= 4×(+)= +2×﹣=
直接写得数.345+233= 45×11= 527﹣398= 235﹣47﹣53=0.78+1.32= = 2.56+1.4= 1.9×4×0.5=3.67÷100= 3.25×1000= 0.125×0.8= 3.6+2.8+6.4=6.08×304≈ 4838÷61≈ 15﹣2.55= == = = =
直接写出得数:578+216= 18.25﹣3.3= 0.99×9+0.99= 3.2﹣= 2÷3=2×= ×8.1= 1×8+1×2= += 21÷7=
直接写得数:728﹣299= 0.125×0.125= 6÷= ××0= 24×(﹣)=÷5= += 0.1×20%= (0.8﹣0.5)÷0.5= 3×6÷3×6=