10×( 1/40 )=1/4 16×( 40 )=2/5 ( 200/3 )×3/5=40
20÷( 80/3 )=3/4 27÷( 54 )=1/2 ( 405/2 )×2/9=45 12×( 1/32 )=3/8
( 45 )×2/3=30 140÷( 175 )=4/5
10×( 1/40 )=1/4 16×( 40 )=2/5 ( 200/3 )×3/5=40
20÷( 80/3 )=3/4 27÷( 54 )=1/2 ( 405/2 )×2/9=45 12×( 1/32 )=3/8
( 45 )×2/3=30 140÷( 175 )=4/5