72 + 28 = 100; 60 + 25 = 85; 20 + 63 = 83; 74 + 9 = 83; 42 − 6 = 36.
16 + 74 = 90; 30 + 27 = 57; 40 + 36 = 76; 98 − 70 = 28; 45 − 8 = 37.
37 + 23 = 60; 10 + 39 = 49; 50 + 31 = 81; 66 + 5 = 71; 67 − 9 = 58.
82 − 54 = 28; 65 − 8 = 57; 70 − 5 = 65; 77 + 6 = 83; 35 + 8 = 43.
73 − 19 = 54; 31 − 4 = 27; 67 + 20 = 87; 57 + 5 = 62; 78 + 8 = 86.
94 − 38 = 56; 55 − 7 = 48; 100 − 9 = 91; 19 + 8 = 27; 46 + 5 = 51.