题目内容
能简算的要简算.
8×
+
÷4
55÷11+
÷11
×
÷
÷8+
×
.
8×
| 5 |
| 6 |
| 2 |
| 5 |
55÷11+
| 11 |
| 14 |
| 1 |
| 7 |
| 9 |
| 13 |
| 3 |
| 13 |
| 16 |
| 17 |
| 1 |
| 17 |
| 1 |
| 8 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:(1)先算乘除,再算加法.
(2)先算除法,再算加法.
(3)把除法变为乘法,约分计算.
(4)把除法变为乘法,运用乘法分配律简算.
(2)先算除法,再算加法.
(3)把除法变为乘法,约分计算.
(4)把除法变为乘法,运用乘法分配律简算.
解答:
解:(1)8×
+
÷4
=8×
+
×
=
+
=
(2)55÷11+
÷11
=5+
=5
(3)
×
÷
=
×
×
=
(4)
÷8+
×
=(
+
)×
=1×
=
| 5 |
| 6 |
| 2 |
| 5 |
=8×
| 5 |
| 6 |
| 2 |
| 5 |
| 1 |
| 4 |
=
| 20 |
| 3 |
| 1 |
| 10 |
=
| 203 |
| 30 |
(2)55÷11+
| 11 |
| 14 |
=5+
| 1 |
| 14 |
=5
| 1 |
| 14 |
(3)
| 1 |
| 7 |
| 9 |
| 13 |
| 3 |
| 13 |
=
| 1 |
| 7 |
| 9 |
| 13 |
| 13 |
| 3 |
=
| 3 |
| 7 |
(4)
| 16 |
| 17 |
| 1 |
| 17 |
| 1 |
| 8 |
=(
| 16 |
| 17 |
| 1 |
| 17 |
| 1 |
| 8 |
=1×
| 1 |
| 8 |
=
| 1 |
| 8 |
点评:此题考查了分数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算定律简便计算.
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