题目内容
比20吨少
吨是______吨;20吨比______吨多
.
| 1 |
| 4 |
| 1 |
| 4 |
(1)20-
=19
(吨);
(2)20÷(1+
),
=20÷
,
=16(吨).
故答案为:19
,16.
| 1 |
| 4 |
| 3 |
| 4 |
(2)20÷(1+
| 1 |
| 4 |
=20÷
| 5 |
| 4 |
=16(吨).
故答案为:19
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