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

1.4 3 =   26.7 1 =
2.5 2 =   27.5 2 =
3.4 3 =   28.5 4 =
4.9 8 =   29.9 8 =
5.2 1 =   30.8 6 =
6.4 4 =   31.6 5 =
7.7 2 =   32.2 1 =
8.9 5 =   33.9 1 =
9.6 2 =   34.8 5 =
10.8 5 =   35.6 1 =
11.7 1 =   36.9 4 =
12.4 3 =   37.6 5 =
13.5 5 =   38.8 8 =
14.6 3 =   39.8 4 =
15.6 2 =   40.9 2 =
16.9 6 =   41.3 1 =
17.5 5 =   42.8 4 =
18.3 2 =   43.5 5 =
19.5 3 =   44.6 4 =
20.9 2 =   45.7 6 =
21.5 4 =   46.2 2 =
22.3 1 =   47.3 1 =
23.3 2 =   48.8 4 =
24.4 2 =   49.7 4 =
25.9 1 =   50.6 1 =