4 x 24 x 52 - (33 x 18 + 33 x 12 )
= 4 x 24 x 25 - ( 27 x 18 + 27 x 12 )
= 100 x 24 - [ 27 x ( 28 + 12 )]
= 2400 - ( 27 x 30 )
= 2400 - 810
= 1590
4.24.52 - ( 33.18 + 33.12)
= 4.24.25 - 33( 18 + 12 )
= 100.24 - 33.30
=2400 - 27.30
= 2400 - 810 = 1590
4 . 24 . 52 - ( 33 . 18 + 33 . 12 )
=4 . 24 . 10 - ( 27 . 18 + 27 . 12 )
= 96 . 10 - [ 27. (12 + 18 )
= 960 - [27 . 30)
=960 - 810
= 150
Vậy giá trị của biểu thức đã cho là 150
4.24.52 - ( 33 . 18 + 33.12 )
=4. 24 .52-[33.(18+12)]
=4 . 24. 52-(33.30)
=4 .24. 52 -(27 . 30)
=4.24 .52 - 810
=4.24.25-810
=96.25-810
=2400-810
=1590
\(4.24.5^2-\left(3^3.18+3^3.12\right)\) \(=4.24.25-\left(27.18+27.12\right)\) \(=4.24.25-\left[27\left(18+12\right)\right]\) \(=4.24.25-\left(27.30\right)\) \(=4.24.25-810\) \(=2400-810\) \(=1590\)
Bài làm :
Ta có :
\(4.24.5^2-\left(3^3.18+3^3.12\right)\) \(=4.24.25-\left(27.18+27.12\right)\) \(=100.24-\left[27\left(18+12\right)\right]\) \(=2400-\left(27.30\right)\) \(=2400-810\) \(=1590\)
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