题目内容
脱式计算,能简算的要简算.
+
÷
36×(
+
-
)
÷
+
×
.
| 2 |
| 5 |
| 3 |
| 5 |
| 9 |
| 20 |
36×(
| 1 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:(1)按照先算除法,再算加法顺序计算解答,
(2)(3)运用乘法分配律解答.
(2)(3)运用乘法分配律解答.
解答:
解:(1)
+
÷
=
+
=1
;
(2)36×(
+
-
)
=36×
+36×
-36×
=4+30-27
=7;
(3)
÷
+
×
=(
+
)×
=1×
=
.
| 2 |
| 5 |
| 3 |
| 5 |
| 9 |
| 20 |
=
| 2 |
| 5 |
| 4 |
| 3 |
=1
| 11 |
| 15 |
(2)36×(
| 1 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
=36×
| 1 |
| 9 |
| 5 |
| 6 |
| 3 |
| 4 |
=4+30-27
=7;
(3)
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
点评:本题主要考查学生依据四则运算计算方法正确进行计算,以及正确运用简便方法解决问题的能力.
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