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

Toán Lớp 6: TINH NHANH : 160-10X[151-(12X5)^2]-2021^0

Toán Lớp 6: TINH NHANH :
160-10X[151-(12X5)^2]-2021^0

Comments ( 2 )

  1. 160-10.[151-(12.5)^2]-2021^0
    = 160-10.(151-60^2)-1
    = 160-(10.151-3600.10)-1
    = 160-1510+36000-1
    = (160-1510+36000)-1
    = 34650-1
    = 34649

  2. $\text{160 $-$ 10 × [151 $-$ (12 × 5)² ] $-$ $2021^0$}$
    $\text{= 160 $-$ 10 × [151 $-$ 60²] $-$ $2021^0$}$
    $\text{= 160 $-$ 10 × [151 $-$ 3600] $-$ 1}$
    $\text{= 160 $-$ 10 × (-3449) $-$ 1}$
    $\text{= 160 $-$ ($-$34490) $-$ 1}$
    $\text{= 160 + 34490 $-$ 1}$
    $\text{= 34650 $-$ 1}$
    $\text{= 34649}$

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