№59. Найди значения выражений. (54 - 46) x 8 = (42 + 18) : 10 = 40 - 5 x 5 + 13 = 15 : 3 + 7 x 5 = 4 : 4 + 6 x 4 = 80 - 7 x 7 + 5 = 8 x 4 + 5 x 6 - 11 = (31 + 33) : 8 = 8 x 8 - 7 x 7 = 73 - 8 x 9 = 42 + 9 x 5 = 42 - 45 : 5 = (27 + 43) : 7 = (17 + 46) : 9 = 18 + 64 : 8 x 9 = 81 - 8 x 3 : 4 = 93 - 4 x 7 =

Решение:

• \( (54 - 46) \times 8 = 8 \times 8 = 64 \)
• \( (42 + 18) : 10 = 60 : 10 = 6 \)
• \( 40 - 5 \times 5 + 13 = 40 - 25 + 13 = 15 + 13 = 28 \)
• \( 15 : 3 + 7 \times 5 = 5 + 35 = 40 \)
• \( 4 : 4 + 6 \times 4 = 1 + 24 = 25 \)
• \( 80 - 7 \times 7 + 5 = 80 - 49 + 5 = 31 + 5 = 36 \)
• \( 8 \times 4 + 5 \times 6 - 11 = 32 + 30 - 11 = 62 - 11 = 51 \)
• \( (31 + 33) : 8 = 64 : 8 = 8 \)
• \( 8 \times 8 - 7 \times 7 = 64 - 49 = 15 \)
• \( 73 - 8 \times 9 = 73 - 72 = 1 \)
• \( 42 + 9 \times 5 = 42 + 45 = 87 \)
• \( 42 - 45 : 5 = 42 - 9 = 33 \)
• \( (27 + 43) : 7 = 70 : 7 = 10 \)
• \( (17 + 46) : 9 = 63 : 9 = 7 \)
• \( 18 + 64 : 8 \times 9 = 18 + 8 \times 9 = 18 + 72 = 90 \)
• \( 81 - 8 \times 3 : 4 = 81 - 24 : 4 = 81 - 6 = 75 \)
• \( 93 - 4 \times 7 = 93 - 28 = 65 \)

Ответ: 64; 6; 28; 40; 25; 36; 51; 8; 15; 1; 87; 33; 10; 7; 90; 75; 65.