题目内容
| 下面各题,怎样算简便就怎样算. ①9.56+4.875-
| ②
| ||||||||||||||
③13÷(
| ④
| ||||||||||||||
⑤[1-(
| ⑥
|
①9.56+4.875-
+1.44,
=(9.56+1.44)+(4.875-
),
=11+4,
=15;
②
÷6-
×
,
=
×
-
×
,
=
×(
-
),
=
×
,
=
;
③13÷(
+
)×
,
=13÷
×
,
=13×
×
,
=9;
④
×[
-(
-
)],
=
×[
-
],
=
×
,
=
;
⑤[1-(
+
)]×
,
=[1-
]×
,
=
×
,
=
;
⑥
×[
÷(
-
)],
=
×[
÷
],
=
×
,
=1.
| 7 |
| 8 |
=(9.56+1.44)+(4.875-
| 7 |
| 8 |
=11+4,
=15;
②
| 3 |
| 4 |
| 1 |
| 6 |
| 1 |
| 4 |
=
| 3 |
| 4 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 4 |
=
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 4 |
=
| 1 |
| 6 |
| 1 |
| 2 |
=
| 1 |
| 12 |
③13÷(
| 1 |
| 4 |
| 5 |
| 6 |
| 3 |
| 4 |
=13÷
| 13 |
| 12 |
| 3 |
| 4 |
=13×
| 12 |
| 13 |
| 3 |
| 4 |
=9;
④
| 8 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 1 |
| 4 |
=
| 8 |
| 9 |
| 3 |
| 4 |
| 3 |
| 16 |
=
| 8 |
| 9 |
| 9 |
| 16 |
=
| 1 |
| 2 |
⑤[1-(
| 3 |
| 8 |
| 1 |
| 4 |
| 2 |
| 39 |
=[1-
| 5 |
| 8 |
| 2 |
| 39 |
=
| 3 |
| 8 |
| 2 |
| 39 |
=
| 1 |
| 52 |
⑥
| 8 |
| 15 |
| 5 |
| 6 |
| 7 |
| 9 |
| 1 |
| 3 |
=
| 8 |
| 15 |
| 5 |
| 6 |
| 4 |
| 9 |
=
| 8 |
| 15 |
| 15 |
| 8 |
=1.
练习册系列答案
相关题目