题目内容
能简算的要简算.
365×25%+635÷4
×
÷
(30%-10%×2)÷
64%×
-28%×
.
365×25%+635÷4
| 14 |
| 17 |
| 1 |
| 7 |
| 1 |
| 17 |
(30%-10%×2)÷
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 6 |
分析:根据整数、小数、分数、百分数四则混合运算的运算顺序和计算方法,再利用乘法的运算定律进行计算.
解答:解:365×25%+635÷4
=365×
+635×
=(365+635)×
=1000×
=250;
×
÷
=
×
×17
=2;
(30%-10%×2)÷
=(0.3-0.1×2)×3
=0.1×3
=0.3;
64%×
-28%×
=(0.64-0.28)×
=0.36×
=0.06.
=365×
| 1 |
| 4 |
| 1 |
| 4 |
=(365+635)×
| 1 |
| 4 |
=1000×
| 1 |
| 4 |
=250;
| 14 |
| 17 |
| 1 |
| 7 |
| 1 |
| 17 |
=
| 14 |
| 17 |
| 1 |
| 7 |
=2;
(30%-10%×2)÷
| 1 |
| 3 |
=(0.3-0.1×2)×3
=0.1×3
=0.3;
64%×
| 1 |
| 6 |
| 1 |
| 6 |
=(0.64-0.28)×
| 1 |
| 6 |
=0.36×
| 1 |
| 6 |
=0.06.
点评:此题主要考查整数、小数、分数、百分数四则混合运算的运算顺序和计算方法,掌握运算顺序和计算方法,能够正确熟练地进行计算.
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