口算,看谁算得又快又准.
72÷8= 28+16= 800÷4= 74﹣47= 2400÷6= 0÷20=
32×20= 60×90= 3000÷6= 45÷5×3= 378÷5≈ 21×22≈
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=
笔算下面各题
7.036﹣4.78
0.684÷9.5
验算: