题目内容
用自己喜欢的方法计算.
(
|
|
| ||||||||||||||||
3-1
|
| [4-(
|
(1)(
-
)×36,
=
×36,
=20;
(2)
×32×
,
=
×4×8×
,
=(
×4)×(8×
),
=3×5,
=15.
(3)
×
-
×
,
=
×(
-
),
=
×
,
=
;
(4)3-1
-
,
=3-(1
+
),
=3-2,
=1;
(5)
÷
÷
,
=
×
×
,
=
;
(6)[4-(
-
)]×
,
=[4-
]×
,
=
×
,
=
.
| 5 |
| 6 |
| 5 |
| 18 |
=
| 10 |
| 18 |
=20;
(2)
| 3 |
| 4 |
| 5 |
| 8 |
=
| 3 |
| 4 |
| 5 |
| 8 |
=(
| 3 |
| 4 |
| 5 |
| 8 |
=3×5,
=15.
(3)
| 9 |
| 20 |
| 3 |
| 7 |
| 9 |
| 20 |
| 1 |
| 7 |
=
| 9 |
| 20 |
| 3 |
| 7 |
| 1 |
| 7 |
=
| 9 |
| 20 |
| 2 |
| 7 |
=
| 9 |
| 70 |
(4)3-1
| 5 |
| 11 |
| 6 |
| 11 |
=3-(1
| 5 |
| 11 |
| 6 |
| 11 |
=3-2,
=1;
(5)
| 5 |
| 6 |
| 2 |
| 3 |
| 5 |
| 6 |
=
| 5 |
| 6 |
| 3 |
| 2 |
| 6 |
| 5 |
=
| 3 |
| 2 |
(6)[4-(
| 3 |
| 4 |
| 3 |
| 8 |
| 4 |
| 29 |
=[4-
| 3 |
| 8 |
| 4 |
| 29 |
=
| 29 |
| 8 |
| 4 |
| 29 |
=
| 1 |
| 2 |
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