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

Toán Lớp 6: câu 1 : a. 25.11.4.10 b.375+63+(-15)+(-40) c.60: [15-(7-4)mũ 2]

Toán Lớp 6: câu 1 :
a. 25.11.4.10
b.375+63+(-15)+(-40)
c.60: [15-(7-4)mũ 2]

Comments ( 2 )

  1. Answer
    a, 25 . 11 . 4 . 10
    = (25 . 4) . (11 . 10)
    = 100 . 110
    = 11000
    ___________________
    b, 375 + 63 + (-15) + (-40)
    = 375 + 63 – 15 – 40
    = 375 + 63 – 55
    = (375 – 55) + 63
    = 320 + 63
    = 383
    ______________________
    c, 60 : [15 – (7 – 4)^2]
    = 60 : [15 – 3^2]
    = 60 : [15 – 9]
    = 60 : 6
    = 10

  2. $a,25.11.4.10$
    $=(25.4).(11.10)$
    $=100.110$
    $=11000$
    $b,375+63+(-15)+(-40)$
    $=375+63-55$
    $=(375-55)+63$
    $=320+63$
    $=383$
    $c.60:[15-(7-4)^2]$
    $=60:[15-3^2]$
    $=60:[15-9]$
    $=60:6$
    $=10$
    $#thanhmaii2008$
     

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

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