题目内容
计算.
+
÷
+
(
+
)÷
(
-
+
)×24
(2-0.6)÷
=
| 4 |
| 5 |
| 1 |
| 4 |
| 4 |
| 5 |
| 11 |
| 16 |
(
| 7 |
| 12 |
| 11 |
| 18 |
| 5 |
| 36 |
(
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
(2-0.6)÷
| 7 |
| 12 |
考点:整数、分数、小数、百分数四则混合运算,运算定律与简便运算
专题:运算顺序及法则,运算定律及简算
分析:(1)运用加法结合律解答,
(2)(3)运用乘法分配律解答,
(4)按照先算括号里面的,再算括号外面的顺序计算解答.
(2)(3)运用乘法分配律解答,
(4)按照先算括号里面的,再算括号外面的顺序计算解答.
解答:
解:(1)
+
÷
+
=
+(
+
)
=
+1
=1
;
(2)(
+
)÷
=
×
+
×
=
+
=8
;
(3)(
-
+
)×24
=
×24-
×24+
×24
=16-18+20
=18;
(4)(2-0.6)÷
=1.4÷
=2.4.
| 4 |
| 5 |
| 1 |
| 4 |
| 4 |
| 5 |
| 11 |
| 16 |
=
| 4 |
| 5 |
| 5 |
| 16 |
| 11 |
| 16 |
=
| 4 |
| 5 |
=1
| 4 |
| 5 |
(2)(
| 7 |
| 12 |
| 11 |
| 18 |
| 5 |
| 36 |
=
| 7 |
| 12 |
| 36 |
| 5 |
| 11 |
| 18 |
| 36 |
| 5 |
=
| 21 |
| 5 |
| 22 |
| 5 |
=8
| 3 |
| 5 |
(3)(
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=16-18+20
=18;
(4)(2-0.6)÷
| 7 |
| 12 |
=1.4÷
| 7 |
| 12 |
=2.4.
点评:(1)依据四则运算计算方法正确进行计算,(2)正确运用简便方法解决问题,是本题考查知识点.
练习册系列答案
相关题目