Below are the 2016 Grade 9 Math Challenge – Elimination Round questions and answers – Part I. More reviewers can be found on the Past Tests and All Posts pages.
1.) Solve for x in 
2.) Find 
3.) What is the value of
4.) Solve for x in
5.) Solve for x in 
Below are the 2017 Grade 9 Math Challenge – Elimination Round questions and answers – Part II. More reviewers can be found on the Past Tests and All Posts pages.
26.) Find all possible values of x in the proportion (x – 3) : (x – 1) = (x + 6) : 20.
27.) An angle in a quadrilateral has measures 
28.) In rhombus 
29.) The diagonals of rhombus STAY intersect at X. If 
30.) Find the perimeter (in units) of the rhombus STAY in the previous problem.
Below are the 2017 Grade 9 Math Challenge – Elimination Round questions and answers – Part I. More reviewers can be found on the Past Tests and All Posts pages.
1.) Find the value of c that will make 
2.) Solve for x in
3.) A number and its reciprocal have a sum of 
4.) Solve for x in
5.) Solve the inequality 
Below are the 2013 Grade 9 Math Challenge – Elimination Round questions and answers – Part II. More reviewers can be found on the Past Tests and All Posts pages.
26.) A right trangle has legs 
27.) Quadrilateral PQRS has right angles at P and R. If PQ = 9, PS = 12 and QR = 10, find RS.
28.) What is the area of quadrilateral PQRS from the previous problem?
29.) The shortest legs of two similar triangles are 5 and 7.5. If the bigger triangle has perimeter 33, find the perimeter of the smaller triangle.
Below are the 2013 Grade 9 Math Challenge – Elimination Round questions and answers – Part I. More reviewers can be found on the Past Tests and All Posts pages.
1.) Simplify:
2.) Simplify:
3.) Simplify:
4.) Simplify:
5.) Simplify:
![6mn^4 \sqrt[3]{8m^{11}n^4}- 2m^3n \sqrt[3]{m^5n^{13}}](http://s0.wp.com/latex.php?latex=6mn%5E4+%5Csqrt%5B3%5D%7B8m%5E%7B11%7Dn%5E4%7D-+2m%5E3n+%5Csqrt%5B3%5D%7Bm%5E5n%5E%7B13%7D%7D&bg=ffffff&fg=000&s=0&c=20201002 "6mn^4 \sqrt[3]{8m^{11}n^4}- 2m^3n \sqrt[3]{m^5n^{13}}")