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

Toán Lớp 7: Tính : a) √25 + 7^2 – 343. 2021^0 b) 7/9 + ( 2/3 )^2 + 5/3

Toán Lớp 7: Tính :
a) √25 + 7^2 – 343. 2021^0
b) 7/9 + ( 2/3 )^2 + 5/3

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    a) $\sqrt{25}+7^2-343.2021^0=5+49-343=-289$
    b) 7/9+(2/3)^2+5/3=7/9+4/9+5/3=11/9+5/3=11/9+15/9=26/9

  2. a)
    \sqrt{25} + 7^2 – 343. 2021^0
    = 5 + 49 – 343. 1
    = 54 – 343
    = -289
    b)
    7/9 + ( 2/3 )^2 + 5/3
    = 7/9 + 4/9 + 15/9
    = {7+4+15}/9
    = 26/9
     

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