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Задание 104. a) 16 + 6 = 22; 29 + 7 = 36; 28 + 12 = 40; 8 + 23 = 31; 7 + 26 = 33; 8 + 17 = 25; 16 + 44 = 60; 19 + 19 = 38; 16 + 5 = 21; 27 + 5 = 32; 14 + 8 = 22; 8 + 15 = 23; б) 27 - 8 = 19; 23 - 18 = 5; 30 - 14 = 16; 44 - 19 = 25; 40 - 33 = 7; 30 - 17 = 13; 22 - 5 = 17; 43 - 34 = 9; 23 - 7 = 16; 32 - 15 = 17; 34 - 15 = 19; 35 - 17 = 18; в) 8 + 7 = 15; 20 - 16 = 4; 6 + 2 = 8; 21 - 2 = 19; 18 + 4 = 22; 6 + 16 = 22; 23 + 57 = 80; 37 - 9 = 28; 45 - 29 = 16; Задание 105. a) 17 + 8 = 25 16 + 4 = 20 6 + 18 = 24 9 + 15 = 24 11 + 19 = 30 16 + 15 = 31 14 + 14 = 28 19 + 19 = 38 27 + 33 = 60 24 + 19 = 43 17 + 47 = 64 56 + 14 = 70 б) 14 - 8 = 6 22 - 7 = 15 13 - 6 = 7 25 - 9 = 16 30 - 6 = 24 40 - 17 = 23 50 - 32 = 18 60 - 51 = 9 27 - 18 = 9 34 - 16 = 18 52 - 26 = 26 в) 22 - 5 = 17 12 + 9 = 21 14 - 7 = 7 18 + 5 = 23 14 + 19 = 33 60 - 18 = 42 17 + 17 = 34 30 - 25 = 5 26 + 26 = 52 33 - 18 = 15