Question

[Lê Thùy Linh]

1 a) 160 - (2³.5²-6.5²⁾

^b) 4.5 ²- 32⁷:16⁸

c. 5871  [928 - ( 247 -82 ) .5 ]

d) 777 :7 + 12321 : 11

Answer 1

[Trân Nguyễn]

a) 160 - ( 8 . 5² - 6 . 5² )

= 160 - 5² . (8 - 6 )

= 160 - 5² . 2

= 160 - 25 . 2

= 160 - 50

= 110

b) 4 . 25 - ( 2⁵ )⁷ : ( 2⁴ )⁸

= 100 - 2³⁵ : 2³²

= 100 - 2³ 

= 100 - 8 

= 92

c) 5871 . [ 928 - 165 . 5 ]

= 5871 . [ 928 - 825 ]

= 5871 . 103

= 604 713

d) 111 + 111 = 222