题目内容
已知[2+(5.55×
-
÷□)]÷0.913=10,则□=
| 4 |
| 3 |
| 27 |
| 10 |
10
10
.分析:把□看作未知数,逐步计算化简,并根据等式的性质求解即可.
解答:解:[2+(5.55×
-
÷□)]÷0.913=10
2+(5.55×
-
÷□)=9.13
5.55×
-
÷□=9.13-2
7.4-
÷□=7.13
÷□=7.4-7.13
□=
÷
□=10
故答案为:10.
| 4 |
| 3 |
| 27 |
| 10 |
2+(5.55×
| 4 |
| 3 |
| 27 |
| 10 |
5.55×
| 4 |
| 3 |
| 27 |
| 10 |
7.4-
| 27 |
| 10 |
| 27 |
| 10 |
□=
| 27 |
| 10 |
| 27 |
| 100 |
□=10
故答案为:10.
点评:根据四则混合运算顺序进行化简求解是解答此题的关键.
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