题目内容
| 4.5+6.3 | 6.5+4.8 | 8.6+7.7 | 10.05+0.4 |
| 34.6-4.9 | 9-4.2 | 3.45÷10 | 65.5÷10 |
| 9.43÷10 | 3.2÷100 | 2.75×10 | 6.783×100 |
| 0.35×2 | 0.8×6 | 5.2+1.7 | 0.01×8 |
| 1.6×0.3 | 7.31×100 | 3.8×4 | 6.3×0.1 |
| 0.8×0.9 | 0.7×1.2 | 2.5×0.4 | 4.5-1.5 |
| 7.5-0.1 | 0.125×8 | 0.23×0.5 | 9.6+5 |
| 8.36+0.75 | 0.35×6 | 0.83+0.6 | 3.16×2 |
| 0.65×2 | 4.7×0.4×0 | 0.09×6 | 0.4×0.1 |
| 2.3×0.3 | 8.3-2.4 | 5×0.02 | 1.68+3.34 |
| 9.6÷6 | 0.03×1.2 | 0.4+1.5 | 7.9×0.01 |
| 0.45+0.55 | 1.2+43 | 9.2-0.8 | 0.85×4 |
| 10.3+2.9 | 100×0.6 | 0.3×7 | 125×0.8 |
| 2.5×4 | 3.7+4.8 | 7×0.08 | 3.6÷0.6 |
| 9.3+0.7 | 0.162×100 | 4.2÷3 | 0.25×4×1.2． |
解：
分析：根据小数的加减乘除及四则混合运算进行计算即可．
点评：口算题目，要求快速准确，能用简便方法的要用简便方法．
| 4.5+6.3=10.8 | 6.5+4.8=11.3 | 8.6+7.7=16.3 | 10.05+0.4=10.45 |
| 34.6-4.9=29.7 | 9-4.2=4.8 | 3.45÷10=0.345 | 65.5÷10=6.55 |
| 9.43÷10=0.943 | 3.2÷100=0.032 | 2.75×10=27.5 | 6.783×100=678.3 |
| 0.35×2=0.7 | 0.8×6=4.8 | 5.2+1.7=6.9 | 0.01×8=0.08 |
| 1.6×0.3=0.48 | 7.31×100=731 | 3.8×4=15.2 | 6.3×0.1=0.63 |
| 0.8×0.9=0.72 | 0.7×1.2=0.84 | 2.5×0.4=1 | 4.5-1.5=3 |
| 7.5-0.1=7.4 | 0.125×8=1 | 0.23×0.5=0.115 | 9.6+5=14.6 |
| 8.36+0.75=9.11 | 0.35×6=2.1 | 0.83+0.6=1.43 | 3.16×2=6.32 |
| 0.65×2=1.3 | 4.7×0.4×0=0 | 0.09×6=0.54 | 0.4×0.1=0.04 |
| 2.3×0.3=0.69 | 8.3-2.4=5.9 | 5×0.02=0.1 | 1.68+3.34=5.02 |
| 9.6÷6=1.6 | 0.03×1.2=0.036 | 0.4+1.5=1.9 | 7.9×0.01=0.079 |
| 0.45+0.55=1 | 1.2+43=44.2 | 9.2-0.8=8.4 | 0.85×4=3.4 |
| 10.3+2.9=13.2 | 100×0.6=60 | 0.3×7=2.1 | 125×0.8=100 |
| 2.5×4=10 | 3.7+4.8=8.5 | 7×0.08=0.56 | 3.6÷0.6=6 |
| 9.3+0.7=10 | 0.162×100=16.2 | 4.2÷3=1.4 | 0.25×4×1.2=1.2 |
分析：根据小数的加减乘除及四则混合运算进行计算即可．
点评：口算题目，要求快速准确，能用简便方法的要用简便方法．
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