题目内容
用递等式计算.
(1)168.1÷(4.3×2-0.4)
(2)
×[
-(
-
)].
(1)168.1÷(4.3×2-0.4)
(2)
| 4 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 1 |
| 4 |
(1)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)
×[
-(
-
)],
=
×[
-
],
=
×
,
=
.
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)
| 4 |
| 9 |
| 3 |
| 4 |
| 7 |
| 16 |
| 1 |
| 4 |
=
| 4 |
| 9 |
| 3 |
| 4 |
| 3 |
| 16 |
=
| 4 |
| 9 |
| 9 |
| 16 |
=
| 1 |
| 4 |
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