题目内容
计算下列各题.
(1)
×
÷
(2)(25+
)×4
(3)(15-14×
)÷
(4)(
-25%)×8÷
×
.
(1)
| 3 |
| 7 |
| 1 |
| 4 |
| 3 |
| 4 |
(2)(25+
| 2 |
| 3 |
(3)(15-14×
| 4 |
| 7 |
| 8 |
| 21 |
(4)(
| 3 |
| 8 |
| 5 |
| 6 |
| 5 |
| 2 |
(1)
×
÷
,
=
×
×
,
=
;
(2)(25+
)×4,
=25×4+
×4,
=100+2
,
=102
;
(3)(15-14×
)÷
,
=(15-8)÷
,
=7÷
,
=7×
,
=18
;
(4)(
-25%)×8÷
×
,
=(
×8-25%×8)÷
×
,
=(3-2)÷
×
,
=1×
×
,
=3.
| 3 |
| 7 |
| 1 |
| 4 |
| 3 |
| 4 |
=
| 3 |
| 7 |
| 1 |
| 4 |
| 4 |
| 3 |
=
| 1 |
| 7 |
(2)(25+
| 2 |
| 3 |
=25×4+
| 2 |
| 3 |
=100+2
| 2 |
| 3 |
=102
| 2 |
| 3 |
(3)(15-14×
| 4 |
| 7 |
| 8 |
| 21 |
=(15-8)÷
| 8 |
| 21 |
=7÷
| 8 |
| 21 |
=7×
| 21 |
| 8 |
=18
| 3 |
| 8 |
(4)(
| 3 |
| 8 |
| 5 |
| 6 |
| 5 |
| 2 |
=(
| 3 |
| 8 |
| 5 |
| 6 |
| 5 |
| 2 |
=(3-2)÷
| 5 |
| 6 |
| 5 |
| 2 |
=1×
| 6 |
| 5 |
| 5 |
| 2 |
=3.
练习册系列答案
相关题目