题目内容
直接写出得数.
| 400×5= | 0×39= | 32÷4= |
| 405×2≈ | ||||
| 72÷8= | 12×3= | 420+170= |
| 89×7≈ | ||||
| 90-43= | 80÷9= | 3000×2= | 1-
| 392×5≈ | ||||
| 68÷7= | 21×5= | 61-16= |
| 58×6≈ |
| 400×5=2000, | 0×39=0, | 32÷4=8, |
| 405×2≈800, | ||||||
| 72÷8=9, | 12×3=36, | 420+170=590, |
| 89×7≈630, | ||||||
| 90-43=47, | 80÷9=8…8, | 3000×2=6000, | 1-
| 392×5≈2000, | ||||||
| 68÷7=9…5, | 21×5=105, | 61-16=45, |
| 58×6≈360. |
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