Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 6: Thực hiện các phép tính sau: a) 12: {400 : [ 500 – (125 + 25 . 7)]} b) 5 . 2^2 – 18 : 3 c) 18 : 3 + 182 + 3. ( 51 : 17) d) 25 . 8 – 12

Toán Lớp 6: Thực hiện các phép tính sau:
a) 12: {400 : [ 500 – (125 + 25 . 7)]}
b) 5 . 2^2 – 18 : 3
c) 18 : 3 + 182 + 3. ( 51 : 17)
d) 25 . 8 – 12 . 5 + 170 : 17 – 8
e) 667 – 195 . 93 : 465 + 372
f) 35^0 . 12 . 173 + 12 . 27
g) 321 – 21 . [(2 . 3^3 + 4^4 : 32) – 52]
h)71 . 64 + 32. (-7) – 13 . 32
k)58 . 75 + 58 . 50 – 58 . 25

Comments ( 2 )

  1. Thực hiện các phép tính sau:
    a) 12: {400 : [ 500 – (125 + 25 . 7)]}
    =12 : { 400 : [500 – (125 + 25 . 7)]}
    =12 : { 400 : [500 – (125 + 175]}
    =12 : { 400 : [500 – 300]}
    =12 : { 400 : 200}
    =12 : 2  = 6
    b) 5 . 2^2 – 18 : 3
    = 5 . 4 – 18 : 3
    = 20 – 6
    = 14
    c) 18 : 3 + 182 + 3. ( 51 : 17)
    = 6 + 182 + 3. ( 51 : 17)
    = 6 + 182 + 3.3
    = 195
    d) 25 . 8 – 12 . 5 + 170 : 17 – 8
    = 200 – 60 + 10 – 8
    = 140 + 2
    = 142
    e) 667 – 195 . 93 : 465 + 372= 667 – 195×1/5 + 372
    = 667 – 975 + 372
    = -308 + 372
    = 64
    f) 35^0 . 12 . 173 + 12 . 27
    = 35.12.173+12.27
    =12.(35.173+27)
    =12.(6055+27)
    =12.6082
    g) 321 – 21 . [(2 . 3^3 + 4^4 : 32) – 52]
    =321−21⋅[2⋅27+256:32−52]
    h) 71 . 64 + 32. (-7) – 13 . 32
    =71.32.2+32.(−7)−13.32
    =32.[71.2.(−7).(−13)]
    =32.12922
    = 71 . 64 + 32. (-7) – 13 . 32
    k) 58 . 75 + 58 . 50 – 58 . 25
    = 58 . (75+50-25)
    = 58 . 100     
    =5800      
                                 @Lucky rabbit    @Flame Of Hope

  2. a) 12: {400 : [ 500 – (125 + 25 . 7)]}
    =12 : { 400 : [500 – (125 + 25 . 7)]}
    =12 : { 400 : [500 – (125 + 175]}
    =12 : { 400 : [500 – 300]}
    =12 : { 400 : 200}
    =12 : 2  = 6
    b) 5 . 2^2 – 18 : 3
    = 5 . 4 – 18 : 3
    = 20 – 6
    = 14
    c) 18 : 3 + 182 + 3. ( 51 : 17)
    = 6 + 182 + 3. ( 51 : 17)
    = 6 + 182 + 3.3
    = 195
    d) 25 . 8 – 12 . 5 + 170 : 17 – 8
    = 200 – 60 + 10 – 8
    = 140 + 2
    = 142
    e) 667 – 195 . 93 : 465 + 372= 667 – 195×1/5 + 372
    = 667 – 975 + 372
    = -308 + 372
    = 64
    f) 35^0 . 12 . 173 + 12 . 27
    = 35.12.173+12.27
    =12.(35.173+27)
    =12.(6055+27)
    =12.6082
    g) 321 – 21 . [(2 . 3^3 + 4^4 : 32) – 52]
    =321−21⋅[2⋅27+256:32−52]
    h) 71 . 64 + 32. (-7) – 13 . 32
    =71.32.2+32.(−7)−13.32
    =32.[71.2.(−7).(−13)]
    =32.12922
    = 71 . 64 + 32. (-7) – 13 . 32
    k) 58 . 75 + 58 . 50 – 58 . 25
    = 58 . (75+50-25)
    = 58 . 100     
    =5800      

Leave a reply

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