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a: \(8\times427\times3+6\times573\times4\)
\(=24\times427+24\times573=24\times\left(427+573\right)\)
=24x1000
=24000
b: \(54\times47-47\times53-20-27\)
\(=47\times\left(54-53\right)-47\)
=47-47
=0
c: \(6\times1235\times20-5\times235\times24\)
=120x1235-235x120
=120x1000
=120000
d: \(\left(137\times99+137\right)-\left(17\times101-17\right)\)
\(=137\times\left(99+1\right)-17\times\left(101-1\right)\)
=137x100-17x100
=13700-1700
=12000
e: \(\left(145\times99+145\right)-\left(143\times101-143\right)\)
=145x(99+1)-143x(101-1)
=14500-14300
=200
g: \(\left(2003-123\times8:4\right)\times\left(36:6-6\right)\)
\(=\left(2003-123\times2\right)\times\left(6-6\right)\)
=0
* 4 x 1930 x 3 + 6 x 70 x 2
= (4 x 3 ) x 1930 + (6 x 2 ) x 70
= 12 x 1930 + 12 x 70
= 12 x (1930 + 70 )
= 12 x 2000
= 24000
* 8 x 427 x 3 + 6 x 573 x 4
= ( 8 x 3 ) x 427 + (6 x 4 ) x 573
= 24 x 427 + 24 x 573
= 24 x ( 427 + 573 )
= 24 x 1000
= 24000
* 117x (35 + 46 ) - 17 x (35 + 46 )
= ( 117 - 17 ) x ( 35 + 46 )
= 100 x 81
= 8100
a/ = 113 x ( 54 + 45 + 1 ) = 113 x 100 = 11300
b/ = 47 x ( 54 - 53 ) - 20 - 27 = 47 - 20 - 27 = 0
c/ = 145 x ( 99 + 1 ) - 143 x ( 101 - 1 ) = 145 x 100 - 143 x 100 = 100 x ( 145 - 143 ) = 100 x 2 = 200
d/ = 1002 x 9 - 2 x 9 = 9 x ( 1002 - 2 ) = 9 x 1000 = 9000
e/ = 24 x 427 + 24 x 573 = 24 x ( 427 + 573 ) = 24 x 1000 = 24000
f/ Sửa đề bài là :
2008 x 867 + 2008 x 133 = 2008 x ( 867 + 133 ) = 2008 x 1000 = 2008000
a) 4x125x25x8
= (4x25)x(125x8)
= 100 x 1000
= 100000.
b) 2x3x4x5x50x25
= (2x50)x(4x25)x(3x5)
= 100 x 100 x 15
= 10000 x 15
= 150000.
c) 8x3x427+6x573x4
= (8x3)x427+(6x4)x573
= 24 x427+ 24 x573
= 24x (427+573)
= 24x 1000
= 24000.
Ủng hộ nha.
a, 4 x 125 x 25 x 8
= (4 x 25) x (125 x 8)
= 100 x 1000
= 100000
b, 2 x 3 x 4 x 5 x 50 x 25
= (2 x 50) x (4 x 25) x (3 x 5)
= 100 x 100 x 15
= 150000
c, 8 x 427 x 3 + 6 x 573 x 4
= 8 x 3 x 427 + 6 x 4 x 573
= 24 x 427 + 24 x 573
= 24 x (427 + 573)
= 24 x 1000
= 24000
Ủng hộ mk nha ^_-
6 2/7 + 7 3/5 + 8 6/9 + 9 1/4 + 2/5 + 5/7 + 1/3 x 3/4 + 1967
= 44/7 + 38/5 + 78/9 + 37/4 + 2/5 + 5/7 + 1/3 + 1967
= ( 44/7 + 5/7 ) + ( 38/5 + 2/5 ) + ( 26/3 + 1/3 ) + ( 37/4 + 3/4 ) +1967
= 7 + 8 + 9 + 10 + 1967
= 15 + 9 + 10 + 1967
= 24 + 10 + 1967
= 34 + 1967
= 2001
972/10 = 97,2.
32/4 = 8,00.
5/125 = 0,04.
6 7/8 = 6,875.
573/100 = 5,73.
65/2 = 32,5.
3 1/4 = 3,25.
972/10 = 97,2
32/4 = 8,0
5/125 = 0,04
6/7/8 = 6,875
573/100 = 7,73
65/2 = 32,5
3/1/4 = 3,25
24
8 x 427 x 3 + 6 x 573 x4=
8x3x427+6x4x573=24x427+24x573=24x(427+573)=24x1000=24000
= 2400 nhé