CREST Mental Maths Olympiad Class 12 Sample Paper

Master complex mental calculations with the CREST Mental Maths Olympiad Sample Paper for Class 12. This sample paper is tailored for advanced learners aiming to boost speed, accuracy, and logical reasoning in high-level math competitions.

What's Inside the Class 12 CREST Mental Maths Sample Paper?

• High-difficulty questions from Comparing Quantities, Mensuration and Data Handling etc.
• Time-based practice for quick and strategic thinking
• Patterned after the official Class 12 CREST Mental Maths Olympiad format

Download the Class 12 CREST Mental Maths Olympiad Sample Paper PDF to begin focused preparation and perform confidently in Olympiad-level challenges.

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Syllabus:

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

Sample Paper Marking Scheme Free Study Material

Sample Questions

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	The archery target has three concentric circular regions. The diameter of the regions are in the 1 : 2 : 3. What is the ratio of their areas?
	a) 2 : 3 : 4		b) 1 : 2 : 3
	c) 1 : 4 : 9		d) 2 : 5 : 7

Q.2	In the figure, ∆ABC and ∆PBC are two isosceles triangles. Find x.
	a) 120o		b) 110o
	c) 115o		d) 100o

Q.3	If + means /, - means +, x means -, and / means x, then 8 / 4 - 6 + 3 x 4 = ?
	a) 26		b) 30
	c) 28		d) 35

Q.4	In the figure, ∠AOB = 140o. Find ∠ADB.
	a) 110o		b) 125o
	c) 130o		d) 120o

Q.5	An elevator descends into a mine shaft at the rate of 7 m/min. If it starts from 5 m above the ground level. How long will it take to reach 205 m down the earth?
	a) 20 min		b) 30 min
	c) 40 min		d) 50 min

Q.6	Consider the given data of an examination with three subjects. How many candidates failed in all the subjects? a.  Candidates appeared 100 b.  Candidates passed in all the three subjects 460 c.  Candidates passed in two subjects only 280 d.  Candidates passed in one subject only 240 e.  Candidates failed in Physics only 80 f.  Candidates failed in Chemistry only 60 g.  Candidates failed in Maths only 140
	a) 30		b) 20
	c) 40		d) 10

Q.7	Find the radius of the largest right circular cone that can be cut out of a cube whose edge is 9 cm.
	a) 4.5 cm		b) 2.5 cm
	c) 5.5 cm		d) 3.5 cm

Q.8	Division of 133 by 19 gives remainder = 0. What is the H.C.F. (133, 9)?
	a) 16		b) 19
	c) 18		d) 17

Q.9	In the adjoining figure, find the value of semi perimeter for ∆ABD and ∆BCD .
	a) 35 m		b) 38 m
	c) 30 m		d) 40 m

Q.10	What is simple interest of $1800 on 2% per annum for 2 years?
	a) $72		b) $78
	c) $64		d) $76

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