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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. a) 11 – 7^2 + 22 : 2
    = 11 – 49 + 11
    = -38 + 11
    = -27
    b) 9 . (8^2 – 15)
    = 9 . (64 – 15)
    = 9 . 49
    = 441
    c) 5 . 8 – (17 + 8) : 5
    = 40 – 25 : 5
    = 40 – 5
    = 35
    d) 75 : 3 + 6 . 9^2
    = 25 + 6 . 81
    = 25 + 486
    = 511  

  2. a)
    11 – 7^2 + 22 : 2
    = 11 – 49 + 11
    = -27
    b)
    9 . (8^2 – 15)
    = 9 . 49
    = 441
    c)
    5 . 8 – (17 + 8) : 5
    = 40 – 5
    = 35
    d)
    75 : 3 + 6 . 9^2
    = 25 + 496
    = 511

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

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