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24,45:12,5:0,8
= 23,45:(12,5x0,8)
= 23,45:10
=2,345
2,5: 5,6 x 14
= 2,5 x 14 : 5,6
=35 : 5,66,25
tick mk nhé
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a ) 46 : 24 + 8 : 24 c ) 23,45 : 12,5 : 0,8
= 23,45 : ( 12,5 x 0,8 )
= ( 46 + 8 ) : 24 = 23,45 : 10
= 2,25 = 2,345
b ) 705 : 45 - 336 : 45
= ( 705 - 336 ) : 45
= 369 : 45
= 8,2
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23,4x 12,5 +12,5 x 75,6 + 12,5
23,4x 12,5 +12,5 x 75,6 + 12,5 x 1
12,5 x(23,4+75,6+1)
12,5 x 100
1250
23,4x12,5+12,5x75,6+12,5=12,5x(23,4+75,6+1)=12,5x100=1250
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= 20,16 x (40 x 0,25) x (0,8 x 12,5)
= 20,16 x 10 x 10
= 2016
20,16 x 40 x 0,25 x 0,8 x 1,25
= 20,16 x ( 40 x 0,25 ) x ( 0,8 x 12,5 )
= 20,16 x 10 x 10
= 2016
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a , 72 , 9 * 99 + 72 + 0 , 9
= 72 , 9 * 99 + 7 2 , 9
= 72 , 9 * ( 99 + 1 )
= 72 , 9 * 100
= 7290
a , 0 , 8 * 96 + 1 , 6 * 2
= 0 , 8 * 96 + 0 , 8 * 2 * 2
= 0 , 8 * 96 + 0 , 8 * 4
= 0 , 8 * ( 96 + 4 )
= 0 , 8 * 100
= 80
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= 2,345
= 2,345