用简便方法计算.7﹣ ()×48 .
直接写出得数. 4.8×5= 45÷0.3= 2.41﹣0.8= 2.5×1.2= 1÷0.25=0.26÷0.02= 1.25×4= 3÷1.5= (36.9+3.1)÷20= 1.8×0.4+8.2×0.4=
竖式计算.①0.76×1.5= ②2.4×3.07≈(得数保留两位小数)③2.688÷0.56= ④48÷2.3≈(精确到十分位)
直接写得数. 0.6×0.7= 1.1×0.7= 1﹣0.25= 3.26÷100= 1.2÷3=2.8.+1.2= 2.5×0.4= 1.72﹣1.2= 9.7×100= 2÷0.4=
直接写出得数. 1﹣0.25= 3.4+1.6= 4.3﹣0.8= 2.7+8.4= 14×0.2=0.5×0.3= 0.25×4= 4.9×1000= 5×0.08= 1.5×4=
直接写得数,涂改不计分.0.1÷0.01= 0.35×100= 2.5×4= 1.44÷1.2=0.5×64= 15×0.06= 0÷0.24= 0.36×1=