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

1.76 32 = ______________  26.65 38 = ______________
2.86 52 = ______________  27.60 17 = ______________
3.44 10 = ______________  28.70 32 = ______________
4.30 30 = ______________  29.85 42 = ______________
5.68 16 = ______________  30.98 59 = ______________
6.36 22 = ______________  31.83 60 = ______________
7.77 68 = ______________  32.73 38 = ______________
8.90 66 = ______________  33.44 22 = ______________
9.54 46 = ______________  34.49 34 = ______________
10.93 56 = ______________  35.37 29 = ______________
11.43 40 = ______________  36.99 78 = ______________
12.75 33 = ______________  37.86 76 = ______________
13.65 20 = ______________  38.84 57 = ______________
14.51 37 = ______________  39.93 72 = ______________
15.65 22 = ______________  40.89 55 = ______________
16.55 47 = ______________  41.51 36 = ______________
17.75 43 = ______________  42.46 31 = ______________
18.81 55 = ______________  43.48 25 = ______________
19.97 49 = ______________  44.39 19 = ______________
20.71 21 = ______________  45.98 71 = ______________
21.92 54 = ______________  46.62 37 = ______________
22.77 44 = ______________  47.77 38 = ______________
23.53 29 = ______________  48.74 54 = ______________
24.64 39 = ______________  49.72 42 = ______________
25.61 59 = ______________  50.68 16 = ______________