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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: a,18.7+6:13 b,785-(323+148):3+2784 c,135.3 mũ 2-3 mũ 2.130

Tháng Mười Hai 11, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: a,18.7+6:13
b,785-(323+148):3+2784
c,135.3 mũ 2-3 mũ 2.130

Comments ( 2 )

  1. cobexinhdep
    cobexinhdep
    11 Tháng Mười Hai, 2022 at 2:56 sáng
    Reply
    $ a) 18.7+6:13=126+6/13=1638/13+6/13=1644/13 $
    $ b) 785-(323+148):3+2784=785-471:3+2784=785-157+2784=3412 $ 
    $ c) 135.3^2-3^2.130=3^2.(135-130)=9.5=45 $
     

  2. hienchaudiem
    hienchaudiem
    11 Tháng Mười Hai, 2022 at 2:56 sáng
    Reply
    a)18.7+6:13
    =6.3.7+6 . 1/13
    =6. 21 + 6 . 1/13
    =6 . (21+1/13)
    = 6 . 274/13
    =1644/13
    b)785-(323+148):3+2784
    =785-471:3+2784
    =785-157+2784
    =785-157+2784
    =628+2784
    =3412
    c)135 . 3^2-3 ^2 . 130
    =3^2.(135-130)
    =3^2 . 5
    =9 . 5
    =45
     

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222-9+11+12:2*14+14 = ? ( )

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