题目内容
计算下面各题.
16×
+
×
÷
×
(
+
)÷
.
16×
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
| 3 |
| 4 |
| 3 |
| 11 |
| 11 |
| 13 |
(
| 2 |
| 15 |
| 2 |
| 3 |
| 1 |
| 8 |
分析:(1)根据乘法分配律进行简算;
(2)按照从左到右的顺序进行计算;
(3)先算加法,再算乘法.
(2)按照从左到右的顺序进行计算;
(3)先算加法,再算乘法.
解答:解:(1)16×
+
×
=(16+
)×
=16
×
=
;
(2)
÷
×
=
×
=
;
(3)(
+
)÷
=
÷
=
.
| 1 |
| 7 |
| 1 |
| 7 |
| 4 |
| 13 |
=(16+
| 4 |
| 13 |
| 1 |
| 7 |
=16
| 4 |
| 13 |
| 1 |
| 7 |
=
| 212 |
| 91 |
(2)
| 3 |
| 4 |
| 3 |
| 11 |
| 11 |
| 13 |
=
| 11 |
| 4 |
| 11 |
| 13 |
=
| 121 |
| 52 |
(3)(
| 2 |
| 15 |
| 2 |
| 3 |
| 1 |
| 8 |
=
| 4 |
| 5 |
| 1 |
| 8 |
=
| 32 |
| 5 |
点评:此题主要考查分数的四则混合运算的运算顺序和应用运算定律进行简便计算.
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