Write the right answer in the blank.

25 + 56 = 81 30 + 54 = 84 46 + 24 = 70 65 + 12 = 77 68 - 26 = 42 99 - 44 = 55 76 - 35 = 41 55 - 12 = 43 37 + 51 = 88 73 + 19 = 92 51 + 49 = 100 77 + 6 = 83 82 - 11 = 71 51 - 23 = 28 68 - 13 = 55 97 - 5 = 92