1) Вычисли значения выражений.

45+27:3-12= 100-10*9-8= 17*3+2*10=
90-36:3*2= 17+15*3*0= 80-5*2:10=
84:4*3+2 5*5+75:5= 72:6+6*5=

45 + 27 : 3 - 12 = 45 + 9 - 12 = 54 - 12 = 42100 - 10*9 - 8 = 100 - 90 - 8 = 10 - 8 = 217*3 + 2*10 = 51 + 20 = 7190 - 36:3*2 = 90 - 12*2 = 90 - 24 = 6617+ 15*3*0 = 17 + 0 = 1780 - 5*2:10 = 80 - 10:10 = 80 - 1 = 7984:4*3 +25*5 +75:5 = 21 + 125 + 15 = 16172:6 + 6*5 = 12 +30 = 42