题目内容
| 12.3×54= | 123×5.4= | 12.3×0.54= | 0.123×0.54= |
12.3×54=664.2;
所以123×5.4=(12.3×10)×(54÷10)=664.2
12.3×0.54=12.3×(54÷100)=6.642
0.123×0.54=(12.3÷100)×(54÷100)=0.06642.
所以123×5.4=(12.3×10)×(54÷10)=664.2
12.3×0.54=12.3×(54÷100)=6.642
0.123×0.54=(12.3÷100)×(54÷100)=0.06642.
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