题目内容
怎样简便就怎样算
| 3×(
| ||||||||||||
24×(
|
| ||||||||||||
| (
|
(1)
+
×3,
=
+
,
=
;
(2)3×(
+
)-
,
=3×
+3×
-
,
=
+
-
,
=
+(
-
),
=
+0,
=
;
(3)24×(
+
+
),
=24×
+24×
+24×
,
=9+8+10,
=27;
(4)
÷7+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(5)
×28,
=
×(27+1),
=
×27+
×1,
=26+
,
=26
;
(6)(
-
)-(
-
),
=
-
-
+
,
=(
+
)-(
+
),
=1-1,
=0.
| 1 |
| 4 |
| 3 |
| 4 |
=
| 1 |
| 4 |
| 9 |
| 4 |
=
| 5 |
| 2 |
(2)3×(
| 2 |
| 15 |
| 1 |
| 12 |
| 1 |
| 4 |
=3×
| 2 |
| 15 |
| 1 |
| 12 |
| 1 |
| 4 |
=
| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 4 |
=
| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 4 |
=
| 2 |
| 5 |
=
| 2 |
| 5 |
(3)24×(
| 3 |
| 8 |
| 1 |
| 3 |
| 5 |
| 12 |
=24×
| 3 |
| 8 |
| 1 |
| 3 |
| 5 |
| 12 |
=9+8+10,
=27;
(4)
| 9 |
| 17 |
| 1 |
| 7 |
| 8 |
| 17 |
=
| 9 |
| 17 |
| 1 |
| 7 |
| 1 |
| 7 |
| 8 |
| 17 |
=(
| 9 |
| 17 |
| 8 |
| 17 |
| 1 |
| 7 |
=1×
| 1 |
| 7 |
=
| 1 |
| 7 |
(5)
| 26 |
| 27 |
=
| 26 |
| 27 |
=
| 26 |
| 27 |
| 26 |
| 27 |
=26+
| 26 |
| 27 |
=26
| 26 |
| 27 |
(6)(
| 5 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
| 7 |
| 12 |
=
| 5 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
| 7 |
| 12 |
=(
| 5 |
| 12 |
| 7 |
| 12 |
| 3 |
| 7 |
| 4 |
| 7 |
=1-1,
=0.
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