题目内容
| 脱式计算下面各题.(能简算的要简算) 6.4÷
|
| ||||||||||
(4-0.4)×(
|
| ||||||||||
| 0.9×31-0.9×1 | [
|
(1)6.4÷
×
,
=
×
×
,
=
;
(2)
×
÷
,
=
×
×
,
=
;
(3)(4-0.4)×(
+
),
=3.6×
,
=3.2;
(4)
÷
×
,
=
×
×
,
=
;
(5)0.9×31-0.9×1,
=0.9×(31-1),
=0.9×30,
=27;
(6)[
-(
+
)]÷
,
=[
-
]÷
,
=-
×12,
=-
.
| 8 |
| 9 |
| 5 |
| 24 |
=
| 32 |
| 5 |
| 9 |
| 8 |
| 5 |
| 24 |
=
| 3 |
| 2 |
(2)
| 5 |
| 42 |
| 24 |
| 25 |
| 36 |
| 35 |
=
| 5 |
| 42 |
| 24 |
| 25 |
| 35 |
| 36 |
=
| 1 |
| 9 |
(3)(4-0.4)×(
| 2 |
| 9 |
| 2 |
| 3 |
=3.6×
| 8 |
| 9 |
=3.2;
(4)
| 10 |
| 19 |
| 3 |
| 4 |
| 38 |
| 5 |
=
| 10 |
| 19 |
| 4 |
| 3 |
| 38 |
| 5 |
=
| 16 |
| 3 |
(5)0.9×31-0.9×1,
=0.9×(31-1),
=0.9×30,
=27;
(6)[
| 3 |
| 8 |
| 1 |
| 6 |
| 1 |
| 3 |
| 1 |
| 12 |
=[
| 3 |
| 8 |
| 1 |
| 2 |
| 1 |
| 12 |
=-
| 1 |
| 8 |
=-
| 3 |
| 2 |
练习册系列答案
相关题目