题目内容
计算(能简算的要简算)
| (
| ||||||||||||||||
| 45×
| ||||||||||||||||
24×(
| 2-(
|
(1)
-
×
+
,
=
-
+
,
=
+
,
=
;
(2)(
-
×
)×
,
=(
-
)×
,
=
×
,
=
;
(3)
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)45×
,
=(46-1)×
,
=46×
-1×
,
=45-
,
=44
;
(5)24×(
-
+
),
=24×
-24×
+24×
,
=18-8+4,
=14;
(6)2-(
+
)-
,
=2-
-
,
=2-(
+
),
=2-1,
=1.
| 1 |
| 2 |
| 1 |
| 7 |
| 7 |
| 10 |
| 5 |
| 6 |
=
| 1 |
| 2 |
| 1 |
| 10 |
| 5 |
| 6 |
=
| 2 |
| 5 |
| 5 |
| 6 |
=
| 37 |
| 30 |
(2)(
| 2 |
| 3 |
| 5 |
| 9 |
| 3 |
| 8 |
| 16 |
| 7 |
=(
| 2 |
| 3 |
| 5 |
| 24 |
| 16 |
| 7 |
=
| 11 |
| 24 |
| 16 |
| 7 |
=
| 22 |
| 21 |
(3)
| 7 |
| 18 |
| 1 |
| 4 |
| 3 |
| 4 |
| 7 |
| 18 |
=(
| 1 |
| 4 |
| 3 |
| 4 |
| 7 |
| 18 |
=1×
| 7 |
| 18 |
=
| 7 |
| 18 |
(4)45×
| 45 |
| 46 |
=(46-1)×
| 45 |
| 46 |
=46×
| 45 |
| 46 |
| 45 |
| 46 |
=45-
| 45 |
| 46 |
=44
| 1 |
| 46 |
(5)24×(
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 6 |
=24×
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 6 |
=18-8+4,
=14;
(6)2-(
| 1 |
| 2 |
| 1 |
| 25 |
| 23 |
| 50 |
=2-
| 27 |
| 50 |
| 23 |
| 50 |
=2-(
| 27 |
| 50 |
| 23 |
| 50 |
=2-1,
=1.
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