Question

 Tính

a) 2 023 - 25² : 5³ + 27                    b) 60: [ 7. ( 11² - 20. 6 ) + 5 ]

Answer 1

\(a, 2023 - 25^2 : 5^3 + 27\)

\(=\left(2023+27\right)-\left(5^2\right)^2:5^3\)

\(=2050-5^4:5^3\)

\(=2050-5\)

\(=2045\)

___

\(b,60:\left[7\cdot\left(11^2-20\cdot6\right)+5\right]\)

\(=60:\left[7\cdot\left(121-120\right)+5\right]\)

\(=60:\left(7\cdot1+5\right)\)

\(=60:\left(7+5\right)\)

\(=60:12\)

\(=5\)

#Toru

Answer 2

a) \(2023-25^2:5^3+27\)

\(=2023-5^4:5^3+27\)

\(=2023-5+27\)

\(=2018+27\)

\(=2045\)

b) \(60:\left[7.\left(11^2-20.6\right)+5\right]\)

\(=60:\left[7.\left(121-120\right)+5\right]\)

\(=60:\left[7.1+5\right]\)

\(=60:\left[7+5\right]\)

\(=60:12\)

\(=5\)

\(#WendyDang\)