| 5.03+15.7= | 10-9.03= | 1.07×0.06= | 11.2×0.4= | 2.15×3= |
| 3÷4= | 5.2÷0.4= | 1.2÷0.8= | 2.5×6.2×0.4= | 17.1×2.4+17.1×7.6= |
| 解：5.03+15.7=20.73 | 10-9.03=0.97 | 1.07×0.06=0.0642 | 11.2×0.4=4.48 | 2.15×3=6.45 |
| 3÷4=0.75 | 5.2÷0.4=13 | 1.2÷0.8=1.5 | 2.5×6.2×0.4=6.2 | 17.1×2.4+17.1×7.6=171 |
分析：根据小数四则运算的计算方法进行计算，能用简便算法的用简便算法．据此解答．
点评：本题主要考查了学生小数四则运算的计算能力．