题目内容
脱式计算.
| 5400-2940÷28×27 |
|
|
(1)5400-2940÷28×27,
=5400-105×27,
=5400-2835,
=2565;
(2)
×
+
÷4,
=
×
+
×
,
=
×(
+
),
=
;
(3)
÷[2-(
+
)],
=
÷[2-
],
=
÷
,
=
.
=5400-105×27,
=5400-2835,
=2565;
(2)
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
| 1 |
| 4 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
=
| 1 |
| 4 |
(3)
| 11 |
| 18 |
| 1 |
| 4 |
| 5 |
| 6 |
=
| 11 |
| 18 |
| 13 |
| 12 |
=
| 11 |
| 18 |
| 11 |
| 12 |
=
| 2 |
| 3 |
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