题目内容
递等式计算(能简算的要简算)
÷9+
×
(
-
)×(
+
)
÷[
×(
+
)].
| 8 |
| 17 |
| 1 |
| 9 |
| 8 |
| 17 |
(
| 3 |
| 4 |
| 1 |
| 6 |
| 5 |
| 9 |
| 2 |
| 3 |
| 9 |
| 20 |
| 1 |
| 2 |
| 2 |
| 5 |
| 4 |
| 5 |
(1)
÷9+
×
,
=
×
+
×
,.
=
×
×2,
=
;
(2)(
-
)×(
+
),
=(
-
)×(
+
),
=
×
,
=
;
(3)
÷[
×(
+
)],
=
÷[
×
],
=
÷
,
=
×
,
=
.
| 8 |
| 17 |
| 1 |
| 9 |
| 8 |
| 17 |
=
| 8 |
| 17 |
| 1 |
| 9 |
| 1 |
| 9 |
| 8 |
| 17 |
=
| 8 |
| 17 |
| 1 |
| 9 |
=
| 16 |
| 153 |
(2)(
| 3 |
| 4 |
| 1 |
| 6 |
| 5 |
| 9 |
| 2 |
| 3 |
=(
| 9 |
| 12 |
| 2 |
| 12 |
| 5 |
| 9 |
| 6 |
| 9 |
=
| 7 |
| 12 |
| 11 |
| 9 |
=
| 77 |
| 108 |
(3)
| 9 |
| 20 |
| 1 |
| 2 |
| 2 |
| 5 |
| 4 |
| 5 |
=
| 9 |
| 20 |
| 1 |
| 2 |
| 6 |
| 5 |
=
| 9 |
| 20 |
| 3 |
| 5 |
=
| 9 |
| 20 |
| 5 |
| 3 |
=
| 3 |
| 4 |
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