CREST Mental Maths Olympiad Class 9 Previous Year Papers

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Syllabus:

Number System
Algebra
Comparing Quantities
Geometry
Mensuration
Playing with Numbers
Data Handling

Q.1 Q.2 Q.3 Q.4 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10

Q.1

The marked price on an item was $3000 but the shopkeeper offered a double discount of 30% and 20%. How much did he finally sell the item?

Q.2

A bicycle wheel makes 10 revolutions in moving 880 m. Find the diameter of the wheel. (π = 22/7)

Q.3

The graph below shows the profit earned by three companies over the years (in $10 million )
What was the average profit earned by all three companies in the year 2021?



Q.4

A sum of money becomes four times in 20 years at simple interest. Find the rate of interest.

Q.5

How many tangents are there in all in this figure?

Q.6

Angles of a linear pair are in the ratio 8 : 1. What is the degree of measure of both angles?

Q.7

Which of the following digit will be sixth to the left of tenth from the right end?

1 1 2 5 4 7 2 8 4 5 7 1 9 6 5 2 4 1 4 5 8 2 4 3 9 7 6 9 4 2 9

Q.8

The base radius of a cylinder is 20 cm and its height is 10 cm. Find its curved surface area in cm2.

Q.9

Find the area of a triangle whose two sides are 16 cm and 12 cm respectively and the perimeter is 42 cm.

Q.10

What will be the area of a circle with circumference equal to 88 cm?

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Answers to Previous Year Questions from CREST Olympiads:

Q.1aQ.2dQ.3aQ.4cQ.5dQ.6bQ.7cQ.8cQ.9cQ.10c

Answers to Previous Year Questions from CREST Olympiads:

Q.1 : a | Q.2 : d | Q.3 : a | Q.4 : c | Q.5 : d | Q.6 : b | Q.7 : c | Q.8 : c | Q.9 : c | Q.10 : c

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