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

1.73 + 45 =   26.58 + 16 =
2.17 + 71 =   27.50 + 54 =
3.60 + 42 =   28.63 + 77 =
4.90 + 69 =   29.90 + 10 =
5.78 + 31 =   30.85 + 49 =
6.31 + 26 =   31.34 + 83 =
7.28 + 21 =   32.12 + 20 =
8.98 + 53 =   33.20 + 68 =
9.53 + 67 =   34.50 + 75 =
10.57 + 32 =   35.67 + 43 =
11.75 + 91 =   36.89 + 46 =
12.63 + 92 =   37.89 + 61 =
13.37 + 52 =   38.23 + 90 =
14.86 + 13 =   39.70 + 37 =
15.27 + 94 =   40.82 + 34 =
16.44 + 32 =   41.20 + 27 =
17.23 + 40 =   42.91 + 38 =
18.14 + 83 =   43.71 + 12 =
19.65 + 47 =   44.37 + 37 =
20.66 + 74 =   45.66 + 35 =
21.25 + 74 =   46.89 + 78 =
22.83 + 27 =   47.92 + 84 =
23.61 + 63 =   48.77 + 77 =
24.32 + 19 =   49.83 + 29 =
25.16 + 87 =   50.33 + 71 =