Question

Calculati respectand regulile invatate . a) [267+117x9-(832:2-531:9)]x10 • b)30+4x[36:9+3x(20+8x42:2)]c) [2.100:(225-500:4)+(84:2x0)]x100:10:10d) 9x(101x1+111:1)-[85-7x(36:9+63:9)]

Answer 1

a) [267+117x9-(832:2-531:9)]x10=
[267+1053-(416-59)]x10=
(267+1053-357)x10=
(1320-357)x10=
963x10
=9630

b)30+4x[36:9+3x(20+8x42:2)]=
30+4x[4+3x(20+336:2)]=
30+4x[4+3x(20+168)]=
30+4x(4+3x188)=
30+4x(4+564)=
30+4x568=
30+2256=
2286

c) [2100:(225-500:4)+(84:2x0)]x100:10:10=
[2100:(225-125)+0]x10:10=
[2100:100+0]x10:10=
(21+0)x10:10=
21x10:10=
210:10=
21

d)9x(101x1+111:1)-[85-7x(36:9+63:9)]=
9x(101+111)-[85-7x(4+7)]=
9x212-(85-7x11)=
1908-(85-77)=
1908-8=
1900