题目内容
脱式计算.(能简算的要简算)
|
| (
|
(1)
×25+75%×75
=75%×25+75%×75,
=(25+75)×75%,
=100×75%,
=75;
(2)
×
+
÷
=
+
,
=
;
(3)(
+
)×18
=
×18+
×18,
=10+15,
=25.
| 3 |
| 4 |
=75%×25+75%×75,
=(25+75)×75%,
=100×75%,
=75;
(2)
| 4 |
| 5 |
| 5 |
| 6 |
| 2 |
| 5 |
| 3 |
| 5 |
=
| 2 |
| 3 |
| 2 |
| 3 |
=
| 4 |
| 3 |
(3)(
| 5 |
| 9 |
| 5 |
| 6 |
=
| 5 |
| 9 |
| 5 |
| 6 |
=10+15,
=25.
练习册系列答案
相关题目