题目内容
(
|
6-
| ||||||||||||||
36×
|
(
| ||||||||||||||
|
(
|
分析:(1)按照先算括号里面的,再算括号外面的顺序解答;
(2)运用减法性质解答;
(3)(4)(5)运用乘法分配律解答;
(6)按照先算括号里面的,再算第二级运算,最后算第一级运算的顺序解答.
(2)运用减法性质解答;
(3)(4)(5)运用乘法分配律解答;
(6)按照先算括号里面的,再算第二级运算,最后算第一级运算的顺序解答.
解答:解:(1)(
×
)×24
=
×24
=12
;
(2)6-
-
=6-(
+
)
=6-1
=5;
(3)36×
=35×
+1×
=2+
=2
;
(4)(
+
)÷
=
×
+
×
=1+1
=2;
(5)
÷7+
×
=(
+
)×
=1×
=
;
(6)(
-
)÷
+
=
÷
+
=
+
=1.
| 5 |
| 6 |
| 5 |
| 8 |
=
| 25 |
| 48 |
=12
| 1 |
| 2 |
(2)6-
| 3 |
| 4 |
| 1 |
| 4 |
=6-(
| 3 |
| 4 |
| 1 |
| 4 |
=6-1
=5;
(3)36×
| 2 |
| 35 |
=35×
| 2 |
| 35 |
| 2 |
| 35 |
=2+
| 2 |
| 35 |
=2
| 2 |
| 35 |
(4)(
| 8 |
| 9 |
| 24 |
| 27 |
| 8 |
| 9 |
=
| 8 |
| 9 |
| 9 |
| 8 |
| 24 |
| 27 |
| 9 |
| 8 |
=1+1
=2;
(5)
| 5 |
| 13 |
| 1 |
| 7 |
| 8 |
| 13 |
=(
| 5 |
| 13 |
| 8 |
| 13 |
| 1 |
| 7 |
=1×
| 1 |
| 7 |
=
| 1 |
| 7 |
(6)(
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 2 |
=
| 1 |
| 12 |
| 1 |
| 6 |
| 1 |
| 2 |
=
| 1 |
| 2 |
| 1 |
| 2 |
=1.
点评:本题主要考查学生依据四则运算顺序,以及运用简便方法,正确解决问题的能力.
练习册系列答案
相关题目