题目内容
能简算的要简算
(1)(
|
(2)36%×
| ||||||||||
(3)97×
|
(4)35÷
|
分析:(1)根据乘法分配律进行简算;
(2)根据乘法分配律进行简算;
(3)根据乘法分配律进行简算;
(4)根据除以一个不为0的数等于乘这个数的倒数,然后再约分计算即可.
(2)根据乘法分配律进行简算;
(3)根据乘法分配律进行简算;
(4)根据除以一个不为0的数等于乘这个数的倒数,然后再约分计算即可.
解答:解:
(1)(
+
-
)×24,
=
×24+
×24-
×24,
=8+2-4,
=10-4,
=6;
(2)36%×
+64%×
,
=(36%+64%)×
,
=1×
,
=
;
(3)97×
+43÷7,
=97×
+43×
,
=(97+43)×
,
=140×
,
=20;
(4)35÷
÷45×
.
=35×
×
×
,
=
.
(1)(
| 1 |
| 3 |
| 1 |
| 12 |
| 1 |
| 6 |
=
| 1 |
| 3 |
| 1 |
| 12 |
| 1 |
| 6 |
=8+2-4,
=10-4,
=6;
(2)36%×
| 1 |
| 8 |
| 1 |
| 8 |
=(36%+64%)×
| 1 |
| 8 |
=1×
| 1 |
| 8 |
=
| 1 |
| 8 |
(3)97×
| 1 |
| 7 |
=97×
| 1 |
| 7 |
| 1 |
| 7 |
=(97+43)×
| 1 |
| 7 |
=140×
| 1 |
| 7 |
=20;
(4)35÷
| 8 |
| 7 |
| 8 |
| 7 |
=35×
| 7 |
| 8 |
| 1 |
| 45 |
| 8 |
| 7 |
=
| 7 |
| 9 |
点评:四则运算,先弄清运算顺序,然后再进一步计算即可,能简算的要简算.
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