直接写得数。                                                                                                                              

20×8＝	2400÷6＝	30×12＝	403÷8≈
99÷3＝	7×11＝	0÷7＝	48×62≈
0.9+1.4＝	2﹣0.5＝	3.6+4.3＝	7.6﹣2.6＝