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

Toán Lớp 6: 8)(-4).125.(-25).(-32l).(-8) 9)26.(-17) + (-17).74–15 10)126. ( -14) + 14. 224 11)26. ( -125) -125 . ( -36) 12)(-27) + (-159) + (-13)

Toán Lớp 6: 8)(-4).125.(-25).(-32l).(-8)
9)26.(-17) + (-17).74–15
10)126. ( -14) + 14. 224
11)26. ( -125) -125 . ( -36)
12)(-27) + (-159) + (-13) + 59

Comments ( 1 )

  1. Giải đáp:
     $a) (-4).125.(-25).(-321).(-8)$
    $= [(-4).125].[(-25).(-8)].(-32)$
    $= (-500).200.(-321)$
    $= (-100000).(-321)$
    $= 32100000$
    $b) 26.(-17)+(-17).74-15$
    $= (-17).(26+74)-15$
    $= (-17).100-15$
    $= (-1700)-15$
    $= -1715$
    $c) 126.(-14)+14.224$
    $= (-14).(126-224)$
    $= (-14).(-98)$
    $= 1372$
    $d) 26.(-125)-125.(-36)$
    $= (-125).[26+(-36)]$
    $= (-125).(-10)$
    $= 1250$
    $e) (-27)+(-159)+(-13)+59$
    $= [(-27)+(-13)]+[(-159)+59]$
    $= (-40)+(-100)$
    $= (-140)$

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

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