题目内容
下面各题怎样简便就怎样计算.
(
+
)÷
(
×
+
×
51÷
×
.
(
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 24 |
(
| 3 |
| 8 |
| 2 |
| 5 |
| 2 |
| 5 |
| 5 |
| 8 |
51÷
| 4 |
| 9 |
| 2 |
| 9 |
(1)(
+
)÷
,
=(
+
)×24,
=
×24+
×24,
=6+16,
=22;
(2)
×
+
×
,
=
×(
+
),
=
×1,
=
;
(3)51÷
×
,
=51×
×
,
=
.
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 24 |
=(
| 1 |
| 4 |
| 2 |
| 3 |
=
| 1 |
| 4 |
| 2 |
| 3 |
=6+16,
=22;
(2)
| 3 |
| 8 |
| 2 |
| 5 |
| 2 |
| 5 |
| 5 |
| 8 |
=
| 2 |
| 5 |
| 3 |
| 8 |
| 5 |
| 8 |
=
| 2 |
| 5 |
=
| 2 |
| 5 |
(3)51÷
| 4 |
| 9 |
| 2 |
| 9 |
=51×
| 9 |
| 4 |
| 2 |
| 9 |
=
| 51 |
| 2 |
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