题目内容
| 估算: 48×32≈______ | 46×79≈______ | 103×21≈______ |
| 41×19≈______ | 72×78≈______ | 61×60≈______. |
48×32≈50×30=1500,
| ||||
| 41×19≈40×20=800, 72×78≈70×80=5600, 61×60≈60×60=3600, 故答案为:1500,4000,2000,800,5600,3600. |
练习册系列答案
相关题目
题目内容
| 估算: 48×32≈______ | 46×79≈______ | 103×21≈______ |
| 41×19≈______ | 72×78≈______ | 61×60≈______. |
48×32≈50×30=1500,
| ||||
| 41×19≈40×20=800, 72×78≈70×80=5600, 61×60≈60×60=3600, 故答案为:1500,4000,2000,800,5600,3600. |