直接写得数。                                                                                                                              

8.3﹣4.3＝	3.02+5.6＝	0.58×100＝	2﹣1.7＝
6.3+0.8＝	2.55﹣0.45＝	7+100＝	0.082+100×0＝
0.87﹣0.7＝	2+1.98＝	32×25＝	8×25+25×8＝