Question

calculeaza.a)27+36:9,(108+342)×6;b)80:(8+2); 42+45:5; c)(757+75)×(81:9); (1009×3)-(1008×3):

Answer 1

27+36:9=27+4=31
(108+342)x6=450x6=2700

b). 80:(8+2)=80:10=8
42+45:5=42+9=51

c).(757+75)x(81:9)=832x9=7488
(1009x3)-(1008x3)=3027-3024=3