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

Toán Lớp 6: c,12.60 + 12.74 – 408 d,17.64 + 17.36 + 290 e,27.75 + 25.27- 150 f, 15^3 : 15^2 +30

Toán Lớp 6: c,12.60 + 12.74 – 408
d,17.64 + 17.36 + 290
e,27.75 + 25.27- 150
f, 15^3 : 15^2 +30

Comments ( 2 )

  1. Giải đáp:
    c)
    =12. (60+ 74)-408
    =12.134-408
    =1608-408
    =1200
    d)
    =17.(64+36)+290
    =17.100+290
    =1700+290
    =1990
    e)
    =27.(75+25)-150
    =27.100-150
    =2700-150
    =2550
    f)
    =15∧(3-2)+30
    =15∧1+30
    =15+30
    =45
        
     

  2. c, 12. 60 + 12. 74 – 408
    = 12. (60 + 74) – 408
    = 12. 134 – 408
    = 1608 – 408
    = 1200
    d, 17. 64 + 17. 36 + 290
    = 17. (64 + 36) + 290
    = 17. 100 + 290
    = 1700 + 290
    = 1990
    e, 27. 75 + 25. 27 – 150
    = 27. (75 + 25) – 150
    = 27. 100 – 150
    = 2700 – 150
    = 2550
    f, 15^3 : 15^2 + 30
    = 15 + 30
    = 45

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