21) Найди значения выражений: a) 5 ⋅ 6 + 64 : 8= б) 18 : 9 + 37 ⋅ 2= в) 31 ⋅ 3 - 56 : 8= г) 70 - 51 : 3 ⋅ 4= д) 9 ⋅ 4 - 28 : 7= е) 7 ⋅ 16 - 80 : 8= ж) 11 ⋅ 5 - 49 : 7= з) 68 - 19 + 30 : 2= и) 85 - 40 : 5 + 35= к) 57 - 27 : 3 + 24= л) (98 - 18) : 16 + 27 =

Ответ:

• a) 5 ⋅ 6 + 64 : 8 = 30 + 8 = 38
• б) 18 : 9 + 37 ⋅ 2 = 2 + 74 = 76
• в) 31 ⋅ 3 - 56 : 8 = 93 - 7 = 86
• г) 70 - 51 : 3 ⋅ 4 = 70 - 17 ⋅ 4 = 70 - 68 = 2
• д) 9 ⋅ 4 - 28 : 7 = 36 - 4 = 32
• е) 7 ⋅ 16 - 80 : 8 = 112 - 10 = 102
• ж) 11 ⋅ 5 - 49 : 7 = 55 - 7 = 48
• з) 68 - 19 + 30 : 2 = 68 - 19 + 15 = 49 + 15 = 64
• и) 85 - 40 : 5 + 35 = 85 - 8 + 35 = 77 + 35 = 112
• к) 57 - 27 : 3 + 24 = 57 - 9 + 24 = 48 + 24 = 72
• л) (98 - 18) : 16 + 27 = 80 : 16 + 27 = 5 + 27 = 32

Ответ: