题目内容
用递等式计算.
2005+1911÷49
24÷1.5-
22÷(
-
)×20%
25÷[1÷(
-
)].
2005+1911÷49
24÷1.5-
| 2 |
| 3 |
22÷(
| 2 |
| 3 |
| 1 |
| 7 |
25÷[1÷(
| 1 |
| 10 |
| 3 |
| 100 |
(1)2005+1911÷49,
=2005+39,
=2044;
(2)24÷1.5-
| 2 |
| 3 |
=16-
| 2 |
| 3 |
=15
| 1 |
| 3 |
(3)22÷(
| 2 |
| 3 |
| 1 |
| 7 |
=22÷
| 11 |
| 21 |
=42×0.2,
=8.4;
(4)25÷[1÷(
| 1 |
| 10 |
| 3 |
| 100 |
=25÷[1÷
| 7 |
| 100 |
=25÷
| 100 |
| 7 |
=
| 7 |
| 4 |
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