脱式计算,能简算的要简算:46.5×99+46.5 4.85×1.25×8 (455﹣12.5×4)÷8.1(0.5+0.25)×4 39÷0.125÷0.8.
直接写出得数.= = 11= == 0÷1.2= = == = = =12= = = 54=
直接写出得数×= ×= ×18= ÷8=6÷= ××= ÷= ÷=÷÷= 0.25+= ﹣= ÷×=÷= ×= 8﹣4÷= ﹣=÷14= 12×(﹣)= 5%×5= +++=3.75+= 63%﹣27%= (1﹣20%)÷20%= 0.4÷=×1.8= ×25%=
口算.= = = == =
直接写出得数.×= 16×= ÷= 9÷=÷33= 1﹣25%= 75%+0.25= ﹣=
直接写出得数:30×= ; 2﹣2÷3= ; = ; 1.52= ; 28.26﹣3.14= ; 99×= ;28= ; (49﹣)×= ; 0.63= ;1= .