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

Toán Lớp 6: M=1+2-3-4+5+6-7-8+9+10-10-12+–.+97+98-99-100+101

Toán Lớp 6: M=1+2-3-4+5+6-7-8+9+10-10-12+………+97+98-99-100+101

Comments ( 1 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    $\text{ 1 – 2 + 3 – 4 + 5 – 6 + … + 97 – 98 + 99 – 100 + 101 }$
    $\text{ = ( 1 + 3 + 5 + 7 + … + 99 + 101 ) – ( 2 + 4 + 6 + … + 98 + 100 )}$
    $\text{ = [ ( 101 – 1 ) : 2 + 1 ] – [ ( 100 – 2 ) : 2 + 1 )}$
    $\text{ = 51 – 50 }$
    $\text{ = 1 }$
    #$Thanh$

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

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