Express 25cm as a fraction of 3m

Answer 1

25/300 = 1/12

Answer 2

1 m = 100 cm

3 m = 3 • 100 cm = 300 cm

25 cm / 3 m = 25 cm / 300 cm =

25 • 1 / 25 • 12 = 1 / 12

OR

Since 1 m = 100 cm

1 cm = 1 / 100 m

25 cm = 25 / 100 m = 1 / 4 m

25 cm / 3 m =

( 1 / 4 m ) / 3 m = 1 / 4 • 3 = 1 / 12