| 直接写出得数． 0.5×1.8= | 0.72÷4= | 16÷0.4= | 3÷5= |
| 2.3×0.5= | 0÷0.96= | 3.5×0.1= | 43÷0.1= |
| 200×0.04= | 1.3×0.5= | 0.42÷0.6= | 6.3÷0.7= |
| 0.21×0.3= | 5.69÷0.5= | 5.5÷11= | 0.75×4= |
| 0.5×1.8=0.9 | 0.72÷4=0.18 | 16÷0.4=40 | 3÷5=0.6 |
| 2.3×0.5=1.15 | 0÷0.96=0 | 3.5×0.1=0.35 | 43÷0.1=4.3 |
| 200×0.04=8 | 1.3×0.5=0.65 | 0.42÷0.6=0.7 | 6.3÷0.7=9 |
| 0.21×0.3=0.063 | 5.69÷0.5=11.38 | 5.5÷11=0.5 | 0.75×4=3 |
分析：根据小数乘除法的计算方法进行计算即可．
点评：口算时，注意运算符号和数据，然后再进一步计算即可，注意小数点的位置．