题目内容
| 直接写结果(有约等号的只要求估算). 145+998= | 2.5×0.4= | 0.99×9+0.99= | 79×31≈ | 35.9÷6≈ | ||||||||||||
| 0.32-0.22= | 3a+4.2a= |
| 24-24×
| =
|
| 145+998=1143 | 2.5×0.4=1 | 0.99×9+0.99=9.9 | 79×31≈2400 | 35.9÷6≈6 | ||||||||||||||||
| 0.32-0.22=0.05 | 3a+4.2a=7.2a |
| 24-24×
|
|
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题目内容
| 直接写结果(有约等号的只要求估算). 145+998= | 2.5×0.4= | 0.99×9+0.99= | 79×31≈ | 35.9÷6≈ | ||||||||||||
| 0.32-0.22= | 3a+4.2a= |
| 24-24×
| =
|
| 145+998=1143 | 2.5×0.4=1 | 0.99×9+0.99=9.9 | 79×31≈2400 | 35.9÷6≈6 | ||||||||||||||||
| 0.32-0.22=0.05 | 3a+4.2a=7.2a |
| 24-24×
|
|