直接写得数。                                                                                                                                                                   

15.5－3.5＝	8.9÷100＝	5.1＋4.09＝	0.14×100＝
22.4＋1.6＝	7.63×1000＝	4.8＋5.2＝	14.5－4.5＝
0.8＋1.2＝	4.5－4＝	3＋0.67＝	199＋52＝
3－0.4＝	25×28×0＝	3.56×100＝	4.7÷10＝