Question

【题目】很快算出得数：

0.5+0.4= 1.4+2.7= 8.2+3.7= 7.5+2.4=

1.8+2.7= 7.3+0.9= 6.2+5.3= 2.0+1.8=

5.7+2.8= 6.6+2.2= 1.5+8.5= 7.4+1.6=

7.5﹣6.5= 3.2﹣2.3= 4.2﹣2.2= 7.2﹣2.3=

Answer 1

【答案】0.9；4.1；11.9；9.9

4.5；8.2；11.5；3.8

8.5；8.8；10；9

1；0.9；2；4.9

【解析】

略