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=
2.5×5= 10+0.4= 2.5×0.4= 7.1×0.2= 1÷0.1= 3.6÷0.4=
0.2×3.1= 4.4﹣1.1= 10+3.4= 1﹣0.87= 6.3×2= 1.25×80=
0.2×0.3= 4.8÷1.2= 2.5×0.4= 8×12.5= 7÷3.5= 36÷0.4=