题目内容
下面各题怎样简便怎样算.
①10944÷36×25-758
②132.5-18÷7.5+7.6
③1.55×
-
×
④(12×
-7.3)÷
⑤
÷[
-(
+
)].
①10944÷36×25-758
②132.5-18÷7.5+7.6
③1.55×
| 3 |
| 22 |
| 3 |
| 22 |
| 9 |
| 20 |
④(12×
| 5 |
| 6 |
| 9 |
| 4 |
⑤
| 3 |
| 5 |
| 7 |
| 8 |
| 2 |
| 5 |
| 3 |
| 8 |
①10944÷36×25-758,
=304×25-758,
=7600-758,
=6842;
②132.5-18÷7.5+7.6,
=132.5-2.4+7.6,
=137.7;
③1.55×
-
×
,
=
×(1.55-
),
=
×(1.55-0.45),
=
×1.1,
=
;
④(12×
-7.3)÷
,
=(10-7.3)÷
,
=2.7×
,
=1.2;
⑤
÷[
-(
+
)],
=
÷[
-
-
],
=
÷[
-
],
=
÷
,
=
×10,
=6.
=304×25-758,
=7600-758,
=6842;
②132.5-18÷7.5+7.6,
=132.5-2.4+7.6,
=137.7;
③1.55×
| 3 |
| 22 |
| 3 |
| 22 |
| 9 |
| 20 |
=
| 3 |
| 22 |
| 9 |
| 20 |
=
| 3 |
| 22 |
=
| 3 |
| 22 |
=
| 3 |
| 20 |
④(12×
| 5 |
| 6 |
| 9 |
| 4 |
=(10-7.3)÷
| 9 |
| 4 |
=2.7×
| 4 |
| 9 |
=1.2;
⑤
| 3 |
| 5 |
| 7 |
| 8 |
| 2 |
| 5 |
| 3 |
| 8 |
=
| 3 |
| 5 |
| 7 |
| 8 |
| 3 |
| 8 |
| 2 |
| 5 |
=
| 3 |
| 5 |
| 1 |
| 2 |
| 2 |
| 5 |
=
| 3 |
| 5 |
| 1 |
| 10 |
=
| 3 |
| 5 |
=6.
练习册系列答案
相关题目