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

Toán Lớp 4: tinh bang cach thuan tien nhat : 16 x 2+ 8 x4 +8 x4 x3

Toán Lớp 4: tinh bang cach thuan tien nhat : 16 x 2+ 8 x4 +8 x4 x3

Comments ( 2 )

  1. => 16 x 2 + 8 x 4 + 8 x 4 x 3
    Ta phân tích ra = 16 x 2 + 8 x 2 x 2 + 8 x 2 x 2 x 3
                             = 16 x 2 +  16 x 2   +      16 x 6 
     => 16 x ( 2 + 2 + 6 )
    => 16 x 10 
    => 160
    Chúc bn hok tốt!!!

  2. 16 \times 2 + 8 \times 4 + 8 \times 4 \times 3
    = 16 \times 2 + 8 \times 2 \times 2 + 8 \times 2 \times 2 times 3
    = 16 \times 2 + 16 \times 2  + 16 \times 6
    = 16 \times ( 2+2+6)
    =16 times 10
    = 160
     

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