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

Toán Lớp 6: 1+2-3-4+5+6-7-8+…+601+602-603-604+605+606

Toán Lớp 6: 1+2-3-4+5+6-7-8+…+601+602-603-604+605+606

Comments ( 2 )

  1. \text {@Luffy Cat}
     1+2-3-4+5+6-7-8+…+601+602-603-604+605+606
    =(1+2-3)-(4-5-6+7)-(8-9-10+11)-. . . -(600-601-602+603) – (604-605-606)
    =0-0-0-. . . -0-(-1-606)
    =0-(-607)
    =697
     

  2. 1 + 2 – 3 – 4 + 5 + 6 – 7 – 8 + … + 601 + 602 – 603 – 604 + 605 + 606
    = 1 + (2 – 3 – 4 + 5) + (6 – 7 – 8 + 9) + … + (602 – 603 – 604 + 605) + 606
    = 1 + 0 + 0 + … + 0 + 606
    = 1 + 606
    = 607

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