新建-四算.doc

口算练习 姓名————————

1.2×5= 1.5×6= 2.5×4=
1.25×8= 0.25×4= 2.4×5=
1.8×0.1= 1.6×0.5= 2.6×0.2=
1÷0.1= 10÷0.1= 1÷0.01=
0.5÷0.1= 100÷0.1= 10.8×0.1=
9.2×5= 1.5×0.6= 2.5×0.4=
1.25×0.8= 0.25×0.4= 2.4×0.5=
1.8×0.01= 1.6×0.05= 12.6×0.2=
1.8÷0.1= 108÷0.1= 10÷0.01=
0.35÷0.1= 1.21÷0.1= 10.08×0.1=
17÷0.1= 150÷0.1= 19÷0.01=
0.5÷0.1= 100÷0.1= 10.8+9.1=
6.2×0.5= 15×0.6= 25×0.4=
12．5×0.8= 0.25×40= 2.4×0.05=
18×0.01= 16×0.05= 126-68.02=
1.8÷0.5= 108÷0.5= 10÷0.2=
0.65÷0.1= 1.9÷0.1= 0.7-0.19=

笔算练习 姓名——————
一、 竖式计算
8．6×9.01= 31.5÷0.15= 824.1 ÷41= 98.2×1.6=

7.8×6.25= 59．6×30= 0.27 ÷0.005= 10.4÷2.5=

二、 能简算的要简便计算。
3.65×7.8+0.365×22 9.8×7.5 102×9.32

2.02×8.5 0.25×12×0.9 15.7÷1.25÷8

4.09×6.8×0.5 3.2+6.8÷2 2.5×1.25×3.2

三、 解方程
3X-1.25X=17.5 2（0.8+ X）=7.96 2.74+3X=6.34