题目内容
神机妙算细又巧.
24×(
+
+
)
(
+
)÷
+
×0.86+14%÷
+
+
+…+
.
24×(
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 6 |
(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
| 7 |
| 12 |
| 12 |
| 7 |
| 1 |
| 128 |
| 1 |
| 64 |
| 1 |
| 32 |
| 1 |
| 4 |
(1)24×(
+
+
),
=24×
+24×
+24×
,
=6+3+4,
=9+4,
=13;
(2)(
+
)÷
+
,
=
÷
+
,
=
×
+
,
=
+
,
=
;
(3)
×0.86+14%÷
,
=
×0.86+0.14×
,
=
×(0.86+0.14),
=
×1,
=
;
(4)
+
+
+…+
,
=(
-
)+(
-
)+(
-
)+…+(
-
),
=
-
,
=
.
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 6 |
=24×
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 6 |
=6+3+4,
=9+4,
=13;
(2)(
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
=
| 21 |
| 20 |
| 7 |
| 3 |
| 7 |
| 10 |
=
| 21 |
| 20 |
| 3 |
| 7 |
| 7 |
| 10 |
=
| 9 |
| 20 |
| 14 |
| 20 |
=
| 23 |
| 20 |
(3)
| 7 |
| 12 |
| 12 |
| 7 |
=
| 7 |
| 12 |
| 7 |
| 12 |
=
| 7 |
| 12 |
=
| 7 |
| 12 |
=
| 7 |
| 12 |
(4)
| 1 |
| 128 |
| 1 |
| 64 |
| 1 |
| 32 |
| 1 |
| 4 |
=(
| 1 |
| 64 |
| 1 |
| 128 |
| 1 |
| 32 |
| 1 |
| 64 |
| 1 |
| 16 |
| 1 |
| 32 |
| 1 |
| 2 |
| 1 |
| 4 |
=
| 1 |
| 2 |
| 1 |
| 128 |
=
| 63 |
| 128 |
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