题目内容
计算下面各题
×16.31-
×2.31
2-
÷
-
+
÷
.
| 5 |
| 7 |
| 5 |
| 7 |
2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
| 1 |
| 5 |
| 4 |
| 5 |
| 2 |
| 5 |
考点:分数的四则混合运算
专题:运算顺序及法则
分析:(1)运用乘法分配律解答,
(2)运用减法性质即可解答,
(3)按照先算除法,再算加法顺序计算即可解答.
(2)运用减法性质即可解答,
(3)按照先算除法,再算加法顺序计算即可解答.
解答:
解:(1)
×16.31-
×2.31
=
×(16.31-2.31)
=
×14
=10;
(2)2-
÷
-
=2-
-
=2-(
+
)
=2-2
=0;
(3)
+
÷
=
+2
=2
.
| 5 |
| 7 |
| 5 |
| 7 |
=
| 5 |
| 7 |
=
| 5 |
| 7 |
=10;
(2)2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
=2-
| 4 |
| 3 |
| 2 |
| 3 |
=2-(
| 4 |
| 3 |
| 2 |
| 3 |
=2-2
=0;
(3)
| 1 |
| 5 |
| 4 |
| 5 |
| 2 |
| 5 |
=
| 1 |
| 5 |
=2
| 1 |
| 5 |
点评:(1)运用简便方法解决问题,(2)运用四则运算计算方法正确进行计算,是本题考查知识点.
练习册系列答案
相关题目