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=| 在________里填上最大的数． 50×________＜360 | 40×________＜365 | 70×________＜500 |
| 30×________＜170 | 20×________＜135 | 90×________＜300 |
| 60×________＜290 | 90×________＜719 | 80×________＜460 |
| 80×________＜341 | 70×________＜216 | 60×________＜550． |
化成最简分数为________．直接写出得数
| 5×5%= | 8÷1.6= | 567-99= | 3÷27= | 3.1+6.07= |
3- - = | 5× ÷5×= |  ÷ = |  ×1.2= | +0.5= |