CREST Mental Maths Olympiad Class 8 Previous Year Papers

Q.1

The sum of two rational numbers is –8. If one of the numbers is -21/8. Find the other number.

Q.2

If a dress is priced at $60 and is on sale for 20% off, how much will the dress cost?

Q.3

Find the next term in the alphanumeric series:
Z1A, X2D, V6G, T21J, R88M, P445P, ?

Q.4

Solve for "x":
69.69 – 51.54 + 73.64 = x + 32.42

Q.5

A clothing store has a total of 250 shirts in stock. If they sold 60% of the shirts, how many shirts are still left in the store?

Q.6

What is the total surface area of a solid hemisphere whose curved surface area is 416 cm²?

Q.7

Find the cube root of 1728?

Q.8

The marks obtained by ten students in Mathematics in the annual examination are as follows:
76, 61, 87, 56, 42, 64, 73, 68, 50, 73.
What is their average marks in mathematics?

Q.9

Simplify:
19² x 19⁰ + 12

Q.10

The given histogram shows the height of 42 students in the class.
Study carefully and answer the questions:
i. How many students are having height equal to 155 or less?
Ii. How many students have height equal to 160 or more?