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

Toán Lớp 5: Bài 5: Tính nhanh a. 45 x 11 – 450 – 45 =======–

Toán Lớp 5: Bài 5: Tính nhanh
a. 45 x 11 – 450 – 45 ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..
b.
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
Bài 6: Tìm y: 198 – 56 : 8 x y = 184

Comments ( 2 )

  1. $\#phnn$
    \text{Bài 5:}
    a)45×11-450-45
    =495-450-45
    =0
    \text{Bài 6:}
    198-56:8 x y =184
    56:8 x y = 198-184
    7 x y =14
    y=14 : 7
    y=2
     

  2. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    a, 45 xx 11 – 450 – 45
    = 45 xx 11 – 45 xx 10 – 45 xx 1
    = 45 xx ( 11 – 10 – 1 )
    = 45 xx 0 = 0
    Bài 6:
    198 – 56 : 8 xx y = 184
             7 xx y = 198 – 184
             7 xx y = 14
                    y = 14 : 7
                    y = 2 

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

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