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

1.51 + 3 =   26.45 + 2 =
2.82 + 3 =   27.4 + 1 =
3.16 + 1 =   28.71 + 7 =
4.91 + 4 =   29.21 + 3 =
5.70 + 6 =   30.14 + 1 =
6.25 + 3 =   31.64 + 4 =
7.74 + 3 =   32.80 + 9 =
8.62 + 7 =   33.82 + 3 =
9.80 + 8 =   34.10 + 1 =
10.57 + 1 =   35.31 + 7 =
11.94 + 2 =   36.52 + 3 =
12.72 + 6 =   37.70 + 8 =
13.72 + 3 =   38.31 + 2 =
14.2 + 4 =   39.72 + 1 =
15.32 + 3 =   40.35 + 4 =
16.52 + 1 =   41.96 + 1 =
17.23 + 3 =   42.94 + 3 =
18.77 + 2 =   43.52 + 5 =
19.24 + 1 =   44.54 + 2 =
20.80 + 5 =   45.48 + 1 =
21.60 + 8 =   46.23 + 3 =
22.40 + 1 =   47.88 + 1 =
23.13 + 6 =   48.76 + 3 =
24.44 + 4 =   49.5 + 3 =
25.74 + 5 =   50.82 + 7 =