题目内容
用递等式计算下面各题.
÷(5+
)
÷[
×(
-
)]
×0.375÷
(2-
×0.75)÷(2+
)
| 5 |
| 6 |
| 5 |
| 6 |
| 9 |
| 10 |
| 1 |
| 2 |
| 5 |
| 6 |
| 3 |
| 10 |
| 2 |
| 9 |
| 6 |
| 7 |
(2-
| 4 |
| 5 |
| 4 |
| 5 |
(1)
÷(5+
),
=
÷5
,
=
;
(2)
÷[
×(
-
)],
=
÷[
×
],
=
÷
,
=
;
(3)
×0.375÷
,
=
÷
,
=
;
(4)(2-
×0.75)÷(2+
),
=(2-0.6)÷2.8,
=1.4÷2.8,
=0.5.
| 5 |
| 6 |
| 5 |
| 6 |
=
| 5 |
| 6 |
| 5 |
| 6 |
=
| 1 |
| 7 |
(2)
| 9 |
| 10 |
| 1 |
| 2 |
| 5 |
| 6 |
| 3 |
| 10 |
=
| 9 |
| 10 |
| 1 |
| 2 |
| 8 |
| 15 |
=
| 9 |
| 10 |
| 4 |
| 15 |
=
| 27 |
| 8 |
(3)
| 2 |
| 9 |
| 6 |
| 7 |
=
| 1 |
| 12 |
| 6 |
| 7 |
=
| 7 |
| 72 |
(4)(2-
| 4 |
| 5 |
| 4 |
| 5 |
=(2-0.6)÷2.8,
=1.4÷2.8,
=0.5.
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