题目内容
| 用你喜欢的方法计算下面各题. (1)208×35÷(100-48) | (2)
| ||||||||||||||
(3)2-
| (4)〔
|
(1)208×35÷(100-48)
=208×35÷52,
=208÷52×35,
=4×35,
=140;
(2)
÷7+
×
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)2-
÷
-
=2-
-
,
=2-(
+
),
=2-2,
=0;
(4)[
-(
+
)]÷
=[
-
]×
,
=
×
,
=
.
=208×35÷52,
=208÷52×35,
=4×35,
=140;
(2)
| 8 |
| 13 |
| 1 |
| 7 |
| 5 |
| 13 |
=
| 8 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 5 |
| 13 |
=(
| 8 |
| 13 |
| 5 |
| 13 |
| 1 |
| 7 |
=1×
| 1 |
| 7 |
=
| 1 |
| 7 |
(3)2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
=2-
| 4 |
| 3 |
| 2 |
| 3 |
=2-(
| 4 |
| 3 |
| 2 |
| 3 |
=2-2,
=0;
(4)[
| 14 |
| 15 |
| 2 |
| 5 |
| 1 |
| 3 |
| 7 |
| 10 |
=[
| 14 |
| 15 |
| 11 |
| 15 |
| 10 |
| 7 |
=
| 1 |
| 5 |
| 10 |
| 7 |
=
| 2 |
| 7 |
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