题目内容
| 60×50= | 23×30= | 11×60= | 70÷2= | 30×300= | 4000÷8= |
| 600÷3= | 420÷7= | 4.6+1.1= | 2.8-1.4= | 2+0.5= | 8.7-1.7= |
| 60×50=3000, | 23×30=690, | 11×60=660, | 70÷2=35, | 30×300=9000, | 4000÷8=500, |
| 600÷3=200, | 420÷7=60, | 4.6+1.1=5.7, | 2.8-1.4=1.4, | 2+0.5=2.5, | 8.7-1.7=7. |
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