题目内容
| 口算 1.2÷0.2= | 2.5×4= | 0.25+4= | 1.87×0= |
| 3.5+0.5= | 1.2÷0.4= | 3.6÷4= | 0÷1.25= |
| 0.12×6= | 0.64×0.03= | 5.8+4.2-6.5= | 7.8÷3= |
| 0.125×8= | 2.8÷1.4= | 0.25÷0.5= | 7.21÷7= |
| 0.35÷10= | 3.6÷3= | 6.3÷0.9= | 0.54÷6= |
| 0.3×0.1= | 1.3÷2= | 0.4÷8=2 | 7.3÷3= |
| 0.51÷0.3= | 15÷0.01= | 5÷10= | 0.7×12= |
| 0.2×0.5= | 3.8×0.1= | 0.2×0.2= | 0.04×0.4= |
| 12.4+7.6= | 8×0.5= | 0.72÷36= | 9×2.5+2.5= |
| 1.8÷3= | 2.3÷2= | 6.5÷5= | 2.14÷2= |
| 2.5×4= | 2.7×2= | 0.5×7= | 4.8+3.6+5.2= |
| 3.4÷1.7= | 2.5+0.2= | 4.5÷5= | 5+2.8= |
| 0.8×0.3= | 13.5×2×0= | 5.25÷5= | 4×2.2= |
| 0.12×0.5= | 1.8×5= | 6.24÷2= | 2.83-1.43= |
| 1.2+2.9= | 3.8÷2= | 1.32×3= | 4.6×7= |
| 解：1.2÷0.2=6 | 2.5×4=10 | 0.25+4=4.25 | 1.87×0=0 |
| 3.5+0.5=4 | 1.2÷0.4=3 | 3.6÷4=0.9 | 0÷1.25=0 |
| 0.12×6=0.72 | 0.64×0.03=0.0192 | 5.8+4.2-6.5=3.5 | 7.8÷3=2.6 |
| 0.125×8=1 | 2.8÷1.4=2 | 0.25÷0.5=0.5 | 7.21÷7=1.03 |
| 0.35÷10=0.035 | 3.6÷3=1.2 | 6.3÷0.9=7 | 0.54÷6=0.09 |
| 0.3×0.1=0.03 | 1.3÷2=0.65 | 0.4÷8=0.05 | 7.3÷3=2.433… |
| 0.51÷0.3=1.7 | 15÷0.01=1500 | 5÷10=0.5 | 0.7×12=8.4 |
| 0.2×0.5=0.01 | 3.8×0.1=0.38 | 0.2×0.2=0.04 | 0.04×0.4=0.016 |
| 12.4+7.6=20 | 8×0.5=4 | 0.72÷36=0.02 | 9×2.5+2.5=25 |
| 1.8÷3=0.6 | 2.3÷2=1.15 | 6.5÷5=1.3 | 2.14÷2=1.07 |
| 2.5×4=10 | 2.7×2=5.4 | 0.5×7=3.5 | 4.8+3.6+5.2=13.6 |
| 3.4÷1.7=2 | 2.5+0.2=2.7 | 4.5÷5=0.9 | 5+2.8=7.8 |
| 0.8×0.3=0.24 | 13.5×2×0=0 | 5.25÷5=1.05 | 4×2.2=8.8 |
| 0.12×0.5=0.06 | 1.8×5=9 | 6.24÷2=3.12 | 2.83-1.43=1.4 |
| 1.2+2.9=4.1 | 3.8÷2=1.9 | 1.32×3=3.96 | 4.6×7=32.2 |
分析：运用小数四则运算的计算法则直接计算即可．
点评：此题考查学生的计算能力，计算时要细心，同时注意个别题使用运算定律可以进行简算．
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