题目内容
(2008?宜宾)
| 计算下面各题. 6760÷13+17×25 |
4.82-5.2÷0.8×0.6 | (
| ||||||||||||||||||||||
(
|
(
|
|
分析:(1)按整数四则混合运算的顺序计算;
(2)按小数四则混合运算的顺序计算;
(3)利用乘法的分配律计算;
(4)(5)(6)按分数四则混合运算的顺序计算.
(2)按小数四则混合运算的顺序计算;
(3)利用乘法的分配律计算;
(4)(5)(6)按分数四则混合运算的顺序计算.
解答:解:(1)6760÷13+17×25,
=520+425,
=945;
(2)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;
(3)(
-
)÷
,
=(
-
)×
,
=
×
-
×
,
=
-
,
=
;
(4)(
+
)÷(2-
),
=
÷1
,
=
;
(5)(
-
×
)÷
,
=(
-
)÷
,
=
÷
,
=1;
(6)
×[
÷(
-
)],
=
×(
÷
),
=
×
,
=1.
=520+425,
=945;
(2)4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;
(3)(
| 7 |
| 12 |
| 1 |
| 2 |
| 11 |
| 24 |
=(
| 7 |
| 12 |
| 1 |
| 2 |
| 24 |
| 11 |
=
| 7 |
| 12 |
| 24 |
| 11 |
| 1 |
| 2 |
| 24 |
| 11 |
=
| 14 |
| 11 |
| 12 |
| 11 |
=
| 2 |
| 11 |
(4)(
| 1 |
| 3 |
| 1 |
| 2 |
| 2 |
| 3 |
=
| 5 |
| 6 |
| 1 |
| 3 |
=
| 5 |
| 8 |
(5)(
| 5 |
| 6 |
| 5 |
| 8 |
| 4 |
| 5 |
| 1 |
| 3 |
=(
| 5 |
| 6 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 1 |
| 3 |
| 1 |
| 3 |
=1;
(6)
| 8 |
| 15 |
| 5 |
| 6 |
| 7 |
| 9 |
| 1 |
| 3 |
=
| 8 |
| 15 |
| 5 |
| 6 |
| 4 |
| 9 |
=
| 8 |
| 15 |
| 15 |
| 8 |
=1.
点评:此题考查了乘法的分配律和按整数、小数、分数的四则混合运算的顺序计算.
练习册系列答案
相关题目