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

Toán Lớp 6: 2.[(7-3³:3²):2²+99]-100.2021⁰ Cần gấp

Toán Lớp 6: 2.[(7-3³:3²):2²+99]-100.2021⁰
Cần gấp

Comments ( 2 )

  1. 2.[(7-3^3:3^2):2^2+99]-100.2021^0
    =2.[(7-3):4+99]-100.1
    =2.(4:4+99)-100
    =2.(1+99)-100
    =2.100-100
    =200-100
    =100
     

  2. 2.[(7 – 3^3 : 3^2) : 2^2 + 99] – 100 . 2021^0
    = 2.[(7 – 3^1) : 4 + 99] – 100 . 1
    = 2.[4 : 4 + 99] – 100
    = 2.[1 + 99] – 100
    = 2 . 100 – 100
    = 200 -100
    = 100
    #dtkc
     

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