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

Toán Lớp 6: Tính giá trị biểu thức 1. 23 x 6 + 23 : 84 + 300 2. 500 : 4 + 300 : 6 – 125 3. 321 – 21 × [(2.3²+4⁴:32)-52] | ()→[]→{} 4. 25 x 2³- 3³+

Toán Lớp 6: Tính giá trị biểu thức
1. 23 x 6 + 23 : 84 + 300
2. 500 : 4 + 300 : 6 – 125
3. 321 – 21 × [(2.3²+4⁴:32)-52] | ()→[]→{}
4. 25 x 2³- 3³+ 125

Comments ( 2 )

  1. 1 ) 23 × 6 + 23 : 84 + 300
    = 138 + 23/84 + 300
    = 11592/84 + 23/84 + 25200/84
    = 36825/84
    2 ) 500 : 4 + 300 : 6 – 125
    = 125 + 50 – 125
    = 175 – 125
    = 50
    3 ) 321 – 21 × [(2 × 3^2 + 4^4 : 32 ) – 52]
    = 321 – 21 × [(2 × 9 + 256 : 32) – 52]
    = 321 – 21 × [( 18 + 8) – 52]
    = 321 – 21 × [26 – 52]
    = 321 – 21 × -26
    = 321 – (-546)
    = 867
    4 ) 25 × 2^3 – 3^3 + 125
    = 25 × 8 – 27 + 125
    = 200- 27 + 125
    = 173 + 125
    = 298
    #dtkc
     

  2. 1)23xx6+23:84+300
    =138+23/84+300
    =138+300+23/84
    =438+23/84
    =36792/84+ 23/84
    =(36792+23)/84
    =36815/84
    2)500:4+300:6-125
    =125+ 50-125
    =175-125
    =50
    3)321 – 21xx[(2.3^2 + 4^4 : 32)-52]
    =321 – 21xx[(2.9+ 256:32)-52]
     =321 – 21xx[(18+8)-52]
    =321 – 21xx(26-52)
    =321 – 21xx(-26)
    =321-(-546)
    =321+546
    =867
    4)25xx2^3- 3^3 + 125
    =25xxx8- 27 +125
    =200-27+125
    =173+125
    =298

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