题目内容
①
|
②
|
③
| ||||||||||||||||||||||
④
|
⑤
|
⑥36×(
|
分析:①②④⑥利用乘法分配律简算;③⑤利用运算顺序解答即可.
解答:
③
÷
+
÷
=
×
+
×
=
×(
+
)
=
×1
=1
;
④
×
÷
=
×
×
=10;
⑤
÷(
-
)
=
÷(
-
)
=
÷
=
×
=
=4
;
⑥36×(
+
)÷
=36×(
+
)×
=36×
×
=10.
解:①
=
=
=
|
||||||||||||||||||||||||
②
=
=
=
=
|
| 3 |
| 7 |
| 7 |
| 11 |
| 4 |
| 7 |
| 7 |
| 11 |
=
| 3 |
| 7 |
| 11 |
| 7 |
| 4 |
| 7 |
| 11 |
| 7 |
=
| 11 |
| 7 |
| 3 |
| 7 |
| 4 |
| 7 |
=
| 11 |
| 7 |
=1
| 4 |
| 7 |
④
| 16 |
| 5 |
| 1 |
| 2 |
| 2 |
| 5 |
=
| 16 |
| 2 |
| 1 |
| 2 |
| 5 |
| 2 |
=10;
⑤
| 12 |
| 7 |
| 2 |
| 3 |
| 1 |
| 4 |
=
| 12 |
| 7 |
| 8 |
| 12 |
| 3 |
| 12 |
=
| 12 |
| 7 |
| 5 |
| 12 |
=
| 12 |
| 7 |
| 12 |
| 5 |
=
| 144 |
| 35 |
=4
| 4 |
| 35 |
⑥36×(
| 7 |
| 9 |
| 5 |
| 6 |
| 29 |
| 5 |
=36×(
| 14 |
| 18 |
| 15 |
| 18 |
| 5 |
| 29 |
=36×
| 29 |
| 18 |
| 5 |
| 29 |
=10.
点评:此题考查了分数的四则混合运算和分数的简便计算.
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