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

Toán Lớp 6: a.135+360+65+24+40 b.8.4.34.125.25 c.5.2^3-18:3^2 d.467+238+533+762+3465 e.129.172-73.129+129 f.205-[1200-(4^2-2.3)^3]:40

Toán Lớp 6: a.135+360+65+24+40
b.8.4.34.125.25
c.5.2^3-18:3^2
d.467+238+533+762+3465
e.129.172-73.129+129
f.205-[1200-(4^2-2.3)^3]:40

Comments ( 2 )

  1. text{Giải đáp + Lời giải và giải thích chi tiết:}
    a, 135 + 360 + 65 + 24 + 40
    = ( 135 + 65 ) + ( 360 + 40 ) + 24
    = 200 + 400 + 24
    = 624
    b, 8 . 4 . 34 . 125 . 25
    =  ( 8 . 125 ) . ( 4 . 25 ) . 34
    = 1000 . 100 . 34
    = 100000 . 34
    = 3400000
    c, 5 . 2^3 – 18 : 3^2
    = 5 . 8 – 18 : 9
    = 40 – 2
    = 38
    d, 467 + 238 + 533 + 762 + 3465
    = ( 467 + 533 ) + ( 238 + 762 ) + 3465
    = 1000 + 1000 + 3465
    = 5465
    e, 129 . 172 – 73 . 129 + 129
    = 129 . 172 – 73 . 129 + 129 . 1
    = 129 . ( 172 – 73 + 1 )
    = 129 . 100
    = 12900
    f, 205 – [1200 – ( 4^2 – 2 . 3)^3] : 40
    = 205 – [1200 – (16 – 6)^3] : 40
    = 205 – [1200 – 1000] : 40
    = 205 – 200 : 40
    = 205 – 5
    = 200

  2. Giải đáp:
    a) 135 + 360 + 65 + 24 + 40
    = 135 + 65 + 360 + 40 + 24
    = 200 + 400 + 24
    = 624
    b) 8 . 4 . 34 .125 . 25
    = 125 . 8 .  25 . 4. 34
    =1000 . 100 . 34
    = 3 400 000
    c) 5 . 2³ – 18 : 3²
    = 5 . 8 – 18 : 9
    = 40 –  2
    = 38
    d) 467 + 238 + 533 + 762 + 3465
    = 467 + 533 + 238 + 762 + 3465
    = 1000 + 1000 + 3465
    = 5465
    e) 129 . 172 – 73 . 129 +129
    = 129 (172 – 73 + 1)
    = 129 . 100
    = 12900
    f) 205 – [ 1200 – ( 4² – 2 . 3 )³ ] : 40
    = 205 – [ 1200 – ( 16 – 6 )³ ] : 40
    = 205 – [ 1200 – 10³ ] : 40
    = 205 – [ 1200 -1000 ] : 40
    = 205 – 200 : 40
    = 205 – 5
    = 200
    Lời giải và giải thích chi tiết:
     

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

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