题目内容
计算下面各题,能简算的要简算.
(
-
)×6×5
236÷
+236-
÷(
+
)
(
| 1 |
| 5 |
| 1 |
| 6 |
236÷
| 5 |
| 9 |
| 5 |
| 411 |
| 8 |
| 15 |
| 8 |
| 15 |
| 4 |
| 5 |
分析:(1)运用乘法分配律解答,
(2)按照先算除法,再从左到右顺序计算即可解答,
(3)按照先算括号里面的,再算括号外面的顺序即可解答.
(2)按照先算除法,再从左到右顺序计算即可解答,
(3)按照先算括号里面的,再算括号外面的顺序即可解答.
解答:解:(1)(
-
)×6×5,
=
×5×6-
×5×6,
=6-5,
=1;
(2)236÷
+236-
,
=
+236-
,
=
-
,
=660
;
(3)
÷(
+
),
=
÷
,
=
.
| 1 |
| 5 |
| 1 |
| 6 |
=
| 1 |
| 5 |
| 1 |
| 6 |
=6-5,
=1;
(2)236÷
| 5 |
| 9 |
| 5 |
| 411 |
=
| 2124 |
| 5 |
| 5 |
| 411 |
=
| 3304 |
| 5 |
| 5 |
| 411 |
=660
| 1619 |
| 2055 |
(3)
| 8 |
| 15 |
| 8 |
| 15 |
| 4 |
| 5 |
=
| 8 |
| 15 |
| 20 |
| 15 |
=
| 2 |
| 5 |
点评:本题考查了四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律进行简便计算.
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