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

Toán Lớp 6: Bài 1: Tính nhanh a) 58.75 + 58.50 – 58.25 b) 27.39 + 27.63 – 2.27 c) 128.46 + 128.32 + 128.22 d) 66.25 + 5.66 + 66.14 + 33.66 e) 12.35

Toán Lớp 6: Bài 1: Tính nhanh a) 58.75 + 58.50 – 58.25 b) 27.39 + 27.63 – 2.27 c) 128.46 + 128.32 + 128.22 d) 66.25 + 5.66 + 66.14 + 33.66 e) 12.35 + 35.182 – 35.94 f) 35.23 + 35.41 + 64.65 g) 29.87 – 29.23 + 64.71

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    a)58.75 + 58.50 – 58.25
    = 58.(75+50-25)
    =58.100
    =5800
    b)27.39+27.63-2.27
    = 27.(39+63-2)
    = 27.100
    = 2700
    c)128.46 + 128.32 + 128.22
    =128. ( 46 + 32 + 22 ).
    = 128.100
    =12800
    d)66.25+5.66+66.14+33.66
    =66.(25+5+14+33)
    =66.77
    =5082
    e)12.35 + 35.182 – 35.94
    =35.(12+182-94)
    =35.100
    =3500
    f) 35.23+35.41+64.65
    =35.(23+41)+64.65
    =35.64+64.65
    =64.(35+65)
    =64.100
    =6400
    g)29.87.23+64.71
    =29.(87-23)+64.71
    =29.64+64.71
    =64.(29+71)=64.100
    =6400

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