三个数连加练习题
1.3 + 2 + 5 =
2.7 + 4 + 2 =
3.7 + 6 + 8 =
4.5 + 3 + 3 =
5.5 + 8 + 1 =
6.2 + 6 + 2 =
7.3 + 3 + 4 =
8.3 + 9 + 5 =
9.5 + 6 + 8 =
10.8 + 5 + 1 =
11.5 + 8 + 7 =
12.2 + 2 + 8 =
13.1 + 5 + 7 =
14.4 + 3 + 7 =
15.4 + 7 + 10 =
16.8 + 4 + 10 =
17.5 + 3 + 9 =
18.4 + 8 + 2 =
19.5 + 4 + 9 =
20.8 + 7 + 2 =