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

1.65 + 45 =   26.39 + 24 =
2.47 + 42 =   27.34 + 52 =
3.51 + 49 =   28.50 + 33 =
4.33 + 96 =   29.10 + 66 =
5.98 + 99 =   30.18 + 63 =
6.97 + 21 =   31.90 + 58 =
7.62 + 59 =   32.29 + 82 =
8.22 + 24 =   33.47 + 67 =
9.27 + 96 =   34.30 + 36 =
10.38 + 24 =   35.39 + 45 =
11.17 + 84 =   36.33 + 65 =
12.52 + 97 =   37.12 + 48 =
13.97 + 89 =   38.72 + 75 =
14.95 + 80 =   39.69 + 49 =
15.89 + 57 =   40.36 + 30 =
16.42 + 43 =   41.24 + 58 =
17.38 + 30 =   42.16 + 55 =
18.56 + 70 =   43.67 + 51 =
19.61 + 64 =   44.86 + 72 =
20.51 + 77 =   45.76 + 32 =
21.27 + 21 =   46.29 + 19 =
22.55 + 74 =   47.81 + 23 =
23.15 + 23 =   48.25 + 81 =
24.47 + 98 =   49.18 + 15 =
25.62 + 87 =   50.28 + 74 =