4x5x0,25x1/5x1/2x2=(4x0,25)x(2x5)x(1/5x1/2)=1x10x1/10=1x1=1
( 4 x 0,25 ) x ( 5 x 1/5 ) x ( 1/2 x 2 )
4 x 5 x 0,25 x 1/5 x 1/2 x 2 = ( 4 x 0,25 ) x ( 5 x 1/5 ) x ( 1/2 x 2 )
= 1 x 1 x 1
= 1 x 1
= 1
tink nhé
4 x 5 x 0.25x1/5x1/2x2
= 20 x 0.25 x 0.2 x 0.5x 2
= 5 x 0.1 x 2
= 0.5 x 2
=1
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