题目内容
脱式计算.
| 2220-36×42÷27 | [(1
|
(25%+
|
(1)2220-36×42÷27,
=2220-1512÷27,
=2220-56,
=2164;
(2)[(1
+2
)÷2
-
]×4
,
=[
÷2
-
]×4
,
=[
-
]×4
,
=
×
,
=4;
(3)(25%+
)×(
÷
÷
),
=
×(1÷
),
=
×
,
=1.
=2220-1512÷27,
=2220-56,
=2164;
(2)[(1
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 2 |
| 5 |
| 6 |
| 4 |
| 5 |
=[
| 25 |
| 6 |
| 1 |
| 2 |
| 5 |
| 6 |
| 4 |
| 5 |
=[
| 5 |
| 3 |
| 5 |
| 6 |
| 4 |
| 5 |
=
| 5 |
| 6 |
| 24 |
| 5 |
=4;
(3)(25%+
| 3 |
| 8 |
| 3 |
| 7 |
| 3 |
| 7 |
| 5 |
| 8 |
=
| 5 |
| 8 |
| 5 |
| 8 |
=
| 5 |
| 8 |
| 8 |
| 5 |
=1.
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