题目内容
脱式计算(能简算的要简算)
4地×
(0.75-
)×(
+
)
4地×
| 5 |
| 47 |
(0.75-
| 3 |
| 90 |
| 4 |
| 9 |
| 9 |
| 3 |
(0)48×
,
=(47+0)×
,
=47×
+
,
=5+
,
=5
,
(2)(8.75-
)×(
+
),
=
×
,
=
.
| 5 |
| 47 |
=(47+0)×
| 5 |
| 47 |
=47×
| 5 |
| 47 |
| 5 |
| 47 |
=5+
| 5 |
| 47 |
=5
| 5 |
| 47 |
(2)(8.75-
| 0 |
| 08 |
| 4 |
| 9 |
| 0 |
| 0 |
=
| 9 |
| 28 |
| 7 |
| 9 |
=
| 7 |
| 28 |
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