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

Toán Lớp 6: a) 20.64+36.20+19 b) 3⁶:3⁵+2.2³+2020⁰ c)80-(4.5²-3.2³) Giúp với ????????????

Toán Lớp 6: a) 20.64+36.20+19
b) 3⁶:3⁵+2.2³+2020⁰
c)80-(4.5²-3.2³)
Giúp với ????????????

Comments ( 2 )

  1. a)
    20. 64 + 36. 20 + 19
    = 20. ( 64 + 36 ) + 19
    = 20. 100 + 19
    = 2000 + 19
    = 2019
    b)
    $3^6$ : $3^5$ + 2. $2^3$ + $2020^0$
    = 3 + $2^4$ + 1
    = 3 + 16 + 1
    = 19 + 1
    = 20
    c)
    80 – ( 4. $5^2$ – 3. $2^3$ )
    = 80 – ( 4. 25 – 3. 8 )
    = 80 – ( 100 – 24 )
    = 80 – 76
    = 4
     

  2. a,
    20.64+36.20+19
    =20.(64+36)+19
    =20.100+19
    =2000+19
    =2019
    b,
    3^6:3^5+2.2^3+2020^0
    =3^(6-5)+2^(1+3)+1
    =3^1+2^4+1
    =3+16+1
    =4+16
    =20
    c,
    80-(4.5^2-3.2^3)
    =80-[4.25-3.8]
    =80-(100-24)
    =80-76
    =4
     

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