题目内容
能简算的要简算.
×11-
-5
×
÷(
+
)
×
+3÷4×
.
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 25 |
| 5 |
| 12 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 5 |
| 2 |
| 3 |
分析:根据运算顺序计算,能简算的要简算.
解答:解:
×11-
-5
=
×(11-1)-5
=
×10-5
=8-5
=3;
×
÷(
+
)
=
×
÷
=
×
×
=
;
×
+3÷4×
=
+
×
=
+
=
+
=
.
| 4 |
| 5 |
| 4 |
| 5 |
=
| 4 |
| 5 |
=
| 4 |
| 5 |
=8-5
=3;
| 4 |
| 25 |
| 5 |
| 12 |
| 2 |
| 3 |
| 2 |
| 3 |
=
| 4 |
| 25 |
| 5 |
| 12 |
| 4 |
| 3 |
=
| 4 |
| 25 |
| 5 |
| 12 |
| 3 |
| 4 |
=
| 1 |
| 20 |
| 2 |
| 3 |
| 2 |
| 5 |
| 2 |
| 3 |
=
| 4 |
| 15 |
| 3 |
| 4 |
| 2 |
| 3 |
=
| 4 |
| 15 |
| 1 |
| 2 |
=
| 8 |
| 30 |
| 15 |
| 30 |
=
| 23 |
| 30 |
点评:在进行分数四则混和运算,能简算的要简算,不要受表面的影响,有些题通过转化后就可以用简便方法计算.
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