CREST Mental Maths Olympiad Class 9 Previous Year Papers

Q.1

A man rows with a speed of 8 km/h in still water. Find the downstream, if the speed of the stream is 4 km/h.

Q.2

A shopkeeper marks his goods 20% above C.P. but allows a 30% discount for cash. What is his net loss?

Q.3

Solve the following equation.

Q.4

A man travelled a certain distance by train at a rate of 15 km/h and walked back at the rate of 12 km/h. The whole journey took 9 hours. Find the distance he travelled.

Q.5

How many such vowels are there in the below arrangement each of which is immediately preceded by a consonant and immediately followed by a number?

P % R 1 5 H * M T E 3 B $ V N 4 K A 8 W I 6 2 G # U H 7 J Q 11 L Y

Q.6

What is the mean of the test score for a class of students whose scores are 86, 94, 70, 81, 92, 74, 75, 89, 76, and 97?

Q.7

A starts a business with $24,000 and later B joins him with $48,000. After how many months did B join if the profit is distributed in an equal ratio?

Q.8

In the figure given below, find the area of the parallelogram.

Q.9

What is the measure of the angle if its supplementary angle measures 98^o?

Q.10

The cost of an article including the sales tax is $616. The rate of sales tax is 10%, if the shopkeeper has made a profit of 12%, then find the cost price of the article.