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

1.85 3 =   26.49 8 =
2.75 4 =   27.18 4 =
3.76 4 =   28.97 2 =
4.73 2 =   29.77 6 =
5.75 1 =   30.18 5 =
6.65 4 =   31.98 8 =
7.53 2 =   32.94 4 =
8.17 5 =   33.78 1 =
9.73 1 =   34.99 6 =
10.84 2 =   35.49 6 =
11.28 3 =   36.69 4 =
12.78 6 =   37.78 6 =
13.26 1 =   38.63 2 =
14.4 4 =   39.56 3 =
15.48 1 =   40.43 3 =
16.33 2 =   41.38 3 =
17.76 3 =   42.77 1 =
18.66 6 =   43.1 1 =
19.66 4 =   44.38 5 =
20.69 2 =   45.27 6 =
21.46 5 =   46.88 2 =
22.6 1 =   47.53 2 =
23.48 4 =   48.48 4 =
24.45 3 =   49.72 2 =
25.59 7 =   50.94 2 =