630÷70= 4.3﹣﹣0.8= 3.4+1.6= 1.8÷0.3= 25×25=
2.5×40= 4×70= 18×50= 4.2÷6= 0.125×80=
直接写出得数
4.3+5.07= 3.5﹣0.8= 0.6×0.7= 0.72÷3=
1÷0.25= 5.5÷5+5.5÷0.5= 5.5×4.8+4.8×4.5= 16×0.125=
直接写得数
4.7+2.5= 2.5×4= 6.3÷0.2= 2.4÷0.08= 0×12.5= 9.7﹣3.4=
6.5﹣5.6= 2.8÷0.4= 5.6÷8= 3.5×0.2= 23.7÷1= 1×9.9=
按要求进行竖式计算．
37.1﹣4.58 6.9÷0.54（保留两位小数）
口算：
0.6×2= 4.8÷0.6= 1.7+3= 4×9×0.25=
1.25×16= 9.6÷32= 2﹣0.09= 8.5﹣0.24﹣1.76=
26.26÷26= 4.57+6.43= 7.9×11﹣7.9= 3.14×32=
直接写出得数．
12.4+2.1= 0.08×0.5= 0.14÷0.02= 2.5+0.2×2=
9.5×100= 1.25×8= 1÷4= 0.25×0.9×4=
3.5﹣1.5= 1.2÷0.4=3.6×0.5= 8×0.9+8×2.1=
6.3÷0.09= 2.9×0.3= 0.95÷5= 7.8+2.2﹣1.5=
1.6×0.25= 0.1÷0.5= 3.5×2×0.1= 2.1÷0.2÷3.5=