题目内容
怎样算简便就怎样算.
×
÷
×58+42÷836×(
+
-
)
| 4 |
| 9 |
| 1 |
| 5 |
| 4 |
| 5 |
| 1 |
| 8 |
| 2 |
| 3 |
| 1 |
| 6 |
| 3 |
| 4 |
(1)
×
÷
,
=
÷
,
=
;
(2)
×58+42÷8,
=
×58+42×
,
=(58+42)×
,
=100×
,
=12.5;
(3)36×(
+
-
),
=36×
+36×
-36×
,
=24+6-27,
=30-27,
=3.
| 4 |
| 9 |
| 1 |
| 5 |
| 4 |
| 5 |
=
| 4 |
| 45 |
| 4 |
| 5 |
=
| 1 |
| 9 |
(2)
| 1 |
| 8 |
=
| 1 |
| 8 |
| 1 |
| 8 |
=(58+42)×
| 1 |
| 8 |
=100×
| 1 |
| 8 |
=12.5;
(3)36×(
| 2 |
| 3 |
| 1 |
| 6 |
| 3 |
| 4 |
=36×
| 2 |
| 3 |
| 1 |
| 6 |
| 3 |
| 4 |
=24+6-27,
=30-27,
=3.
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