题目内容
脱式计算,注意使计算简便
+
×
÷2
(
+
-
)×24
×
+
÷4
2-
÷
-
[4-(
-
)]×
.
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
(
| 3 |
| 4 |
| 1 |
| 2 |
| 7 |
| 12 |
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
[4-(
| 3 |
| 4 |
| 3 |
| 8 |
| 4 |
| 29 |
(1)
+
×
÷2
=
+
×
×
,
=
+
,
=
;
(2)(
+
-
)×24
=
×24+
×24-
×24,
=18+12-14,
=30-14,
=16;
(3)
×
+
÷4
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(4)2-
÷
-
=2-
×
-
,
=2-
-
,
=2-(
+
),
=2-2,
=0;
(5)[4-(
-
)]×
=[4-
]×
,
=3
×
,
=
.
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
=
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 2 |
=
| 1 |
| 6 |
| 1 |
| 4 |
=
| 5 |
| 12 |
(2)(
| 3 |
| 4 |
| 1 |
| 2 |
| 7 |
| 12 |
=
| 3 |
| 4 |
| 1 |
| 2 |
| 7 |
| 12 |
=18+12-14,
=30-14,
=16;
(3)
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
| 1 |
| 4 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 1 |
| 4 |
=
| 17 |
| 24 |
=
| 17 |
| 24 |
(4)2-
| 6 |
| 13 |
| 9 |
| 26 |
| 2 |
| 3 |
=2-
| 6 |
| 13 |
| 26 |
| 9 |
| 2 |
| 3 |
=2-
| 4 |
| 3 |
| 2 |
| 3 |
=2-(
| 4 |
| 3 |
| 2 |
| 3 |
=2-2,
=0;
(5)[4-(
| 3 |
| 4 |
| 3 |
| 8 |
| 4 |
| 29 |
=[4-
| 3 |
| 8 |
| 4 |
| 29 |
=3
| 5 |
| 8 |
| 4 |
| 29 |
=
| 1 |
| 2 |
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