5 加法 21 等于多少？

5 + 20 = 25 5 + 22 = 27 5 + 19 = 24 5 + 23 = 28 5 + 24 = 29 5 + 18 = 23 5 + 25 = 30 5 + 17 = 22 4 + 21 = 25 6 + 21 = 27 3 + 21 = 24 7 + 21 = 28 2 + 21 = 23 8 + 21 = 29 1 + 21 = 22 9 + 21 = 30 1 + 25 = 26 2 + 24 = 26 3 + 23 = 26 4 + 22 = 26 6 + 20 = 26 7 + 19 = 26 43 + 100 = 143 15 + 20 = 35 33 + 3 = 36 11 + 58 = 69 35 + 11 = 46 79 + 10 = 89 80 - 54 = 26 91 - 65 = 26