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

Toán Lớp 5: (99 + 99 + 99 x 100 x 9999 ) x ( 99 x 10 – 99 x 10 )

Toán Lớp 5: (99 + 99 + 99 x 100 x 9999 ) x ( 99 x 10 – 99 x 10 )

Comments ( 2 )

  1. Muối Gửi Bài :
    ( 99 + 99 + 99 xx 100 xx 9999 ) xx ( 99 xx 10 – 99 xx 10 )
    => ( 99 + 99 + 99 xx 100 xx 9999 ) xx ( 99 xx [ 10 – 10 ] )
    => ( 99 + 99 + 99 xx 100 xx 9999 ) xx ( 99 xx 0 )
    => ( 99 + 99 + 99 xx 100 xx 9999 ) xx 0 
    => 0 ( Số nào nhân với 0 thì vẫn sẽ bằng 0 )
    @muoiakiramobile
    #xinhaynhat!!

  2. Giải đáp+Lời giải và giải thích chi tiết:
    $(99 + 99 + 99$ x $100$ x $9999 )$ x $( 99$ x $10 – 99$ x$ 10 )$ 
    $=[(99+99+99$ x $100 )$x$9999]$ x$(990-990)$
    $=[(99+99+9900)$ x $9999]$ x $0$
    $=[(99+9999)$ x $9999]$ x $0$
    $=(10098$ x $9999)$ x $0$
    $=100969902$ x $0$
    $=0$

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

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