| 6.4÷4= | 7.5÷5= | 12.3+0.8= |
| 16×0.5= | 14-7= | 23.6-0.6= |
| 0.4×0.6= | 7.2÷8= | 4.5÷9= |
| 8.7+5.6= | 0.25×4= | 0.32+8= |
解：
| 6.4÷4=1.6 | 7.5÷5=1.5 | 12.3+0.8=13.1 |
| 16×0.5=8 | 14-7=7 | 23.6-0.6=23 |
| 0.4×0.6=0.24 | 7.2÷8=0.9 | 4.5÷9=0.5 |
| 8.7+5.6=14.3 | 0.25×4=1 | 0.32+8=8.32 |
分析：根据小数加减乘除法的计算方法进行解答即可．
点评：此题考查了小数加减乘除法的口算能力，让解答即可．