EASY SUBTRACTION. Be able to answer this in less than one minute.

1.4 1 =   26.5 4 =
2.6 2 =   27.2 2 =
3.7 5 =   28.9 1 =
4.7 2 =   29.9 7 =
5.8 1 =   30.4 2 =
6.6 2 =   31.2 1 =
7.4 2 =   32.9 8 =
8.8 3 =   33.8 1 =
9.9 4 =   34.7 4 =
10.9 4 =   35.7 4 =
11.6 3 =   36.4 4 =
12.4 2 =   37.4 2 =
13.4 1 =   38.3 3 =
14.7 5 =   39.1 1 =
15.4 4 =   40.6 2 =
16.7 6 =   41.7 2 =
17.6 2 =   42.9 7 =
18.4 4 =   43.7 7 =
19.5 2 =   44.4 3 =
20.6 2 =   45.2 1 =
21.8 1 =   46.5 3 =
22.9 5 =   47.3 1 =
23.9 6 =   48.8 5 =
24.9 4 =   49.6 2 =
25.6 3 =   50.6 5 =