CREST Mental Maths Olympiad Class 10 Previous Year Papers

Q.1

Express 4/(√5 - 1) with a rational denominator.

Q.2

The graph below shows the ratio of export to imports of two companies over the years.
In how many of the given years were the exports more than the imports for company A?

Q.3

If √3 = 1.732, what is the value of 2/√3?

Q.4

Study the line graph carefully to answer the question.
Which month showed the highest absolute difference in the consumer price index over the previous month?

Q.5

Find the volume of a sphere whose radius is 6 cm.

Q.6

What will come in place of question mark (?)?
4, 9, 16, 25, ?

Q.7

Study the graph carefully to answer the question.
What was the total FDI for the period shown in the figure?

Q.8

The age of a father is 4 times that of his son. Five years ago, the father was 7 times as old as his son at the time. What is the present age of the father?

Q.9

Simplify:
((3² + 8⁰)/5²)

Q.10

Find the radius of a circular field whose circumference measures 11/2 km.