题目内容
用递等式计算.
(1)
÷[
×(
+
)]
(2)1.05×(3.8-0.8)÷6.3.
(1)
| 9 |
| 20 |
| 1 |
| 2 |
| 2 |
| 5 |
| 4 |
| 5 |
(2)1.05×(3.8-0.8)÷6.3.
(1)
÷〔
×(
+
)〕,
=
÷〔
×
〕,
=
×
,
=
;
(2)1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=4.15÷6.3,
=
.
| 9 |
| 20 |
| 1 |
| 2 |
| 2 |
| 5 |
| 4 |
| 5 |
=
| 9 |
| 20 |
| 1 |
| 2 |
| 6 |
| 5 |
=
| 9 |
| 20 |
| 5 |
| 3 |
=
| 3 |
| 4 |
(2)1.05×(3.8-0.8)÷6.3,
=1.05×3÷6.3,
=4.15÷6.3,
=
| 83 |
| 126 |
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