a. Find the missing term (N) to form equivalent ratio.
1) 4 : N = 8 : 10 N =____________
2) 6 : 15 = N : 45 N = ____________
3) 1/6 = N/36 N = ____________
4) 4/5 = 20/N N = ____________
5) N : 7 = 12 : 21 N = ____________


b. Look the following pairs of ratios. Put a check ( / ) before the number if they are equivalent ratios and leave the blank if they are not.


_______11) 2 : 3 and 4 : 6
_______12) 5 : 6 and 12 : 7
_______13) 7 : 1 and 2 : 5
_______14) 15 : 30 and 1 : 2
_______15) 4 : 1 and 8 : 3
_______16) 11 : 2 and 2 : 11
_______17) 3 : 1 and 9 : 3
_______18) 9 : 4 and 2 : 1
_______19) 9 : 4 and 2 : 1
_______20) 1 : 6 and 5 : 30








c. Simplify the ratio.
21) 6 : 8 = _______
22) 15 : 20 = _____
23) 10/20 = ______
24) 9/12 = ________
25) 25/50 = _______