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

Toán Lớp 6: bài 2 tính A 11-7mũ2+22:2 B 9 . (8 mũ2-15) C 5 . 8-(17+8):5 D 75 : 3+6 . 9 MŨ2

Toán Lớp 6: bài 2 tính
A 11-7mũ2+22:2
B 9 . (8 mũ2-15)
C 5 . 8-(17+8):5
D 75 : 3+6 . 9 MŨ2

Comments ( 2 )

  1. $#Shin$
    a, 11 – 7² + 22 : 2
    = 11 – 49 + 11
    = -27
    b, 9 ( 8² – 15 )
    = 9 ( 64 – 15 )
    = 9. 49
    = 441
    c, 5 . 8 – ( 17 + 8 ) : 5
    = 5 . 8 – 25 : 5
    = 40 – 5
    = 35
    d, 75 : 3 + 6 . 9²
    = 75 : 3 + 6 . 81
    = 25 + 486
    = 511 
     

  2. $A) 11-7²+22:2$
    $=11 – 49 + 11$
    $=-38+11$
    $=-27$
    $B) 9 . (8²-15)$
    $=9 . (64 -15)$
    $=9.49$
    $=441$
    $C) 5 . 8-(17+8):5$
    $=40 – 25 : 5$
    $= 40 – 5$
    $= 35$
    $D) 75 : 3+6 . 9²$
    $=25 + 6 . 81$
    $=25 + 486$
    $=511$
     

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

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