Toán Lớp 6: 1) 30.75 + 25.30 – 150 2) 160 – (4.52 – 3.23) 3) [36.4 – 4.(82 – 7.11)2] : 4 – 20220

Question

Toán Lớp 6: 1) 30.75 + 25.30 – 150
2) 160 – (4.52 – 3.23)
3) [36.4 – 4.(82 – 7.11)2] : 4 – 20220, hướng dẫn giải giúp em bài này ạ, em cảm ơn thầy cô và các bạn nhiều.

in progress 0
Huyền Thư 6 tháng 2022-06-11T06:43:49+00:00 2 Answers 0 views 0

TRẢ LỜI ( 2 )

  1. 1) 30 . 75 + 25 . 30 – 150
    = 30 . ( 75 + 25 ) – 150
    = 30 . 100 – 150
    = 3000 – 150
    = 2850
    2) 160 – ( 4 . 52 – 3 . 23 )
    = 160 – ( 208 – 69 )
    = 160 – 139
    = 21
    3) [ 36 . 4 – 4 . ( 82 – 7 . 11 ) . 2 ] : 4 – 2022^0
    = [ 144 – 4 . 2 . ( 82 – 77 ) ] : 4 – 1
    = [ 144 – 8 . 5 ] : 4 – 1
    = [ 144 – 40 ] : 4 – 1
    = 104 : 4 – 1
    = 26 – 1
    = 25

  2. 1) 30 . 75 + 25 . 30 – 150
    = 30 . ( 75 + 25 ) – 150
    = 30 . 100 – 150
    = 300 – 150
    = 150
    2) 160 – ( 4 . 52 – 3 . 23 )
    = 160 – ( 208 – 69 )
    = 160 – 139
    = 21
    3) [ 36 . 4 – 4 . ( 82 – 7 . 11 ) . 2 ] : 4 – 20220^0
    = [ 144 – 4 . ( 82 – 77 ) . 2 ] : 4 – 20220^0
    = ( 144 – 4 . 5 . 2 ) : 4 – 20220^0
    = ( 144 – 40 ) : 4 – 20220^0
    = 104 : 4 – 20220^0
    = 26 – 1
    = 25
     

Leave an answer

Browse

12:2+4x4-12:2-5x3 = ? ( )