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	What will come in place of question mark (?) in the following number series? 1, 3, 6, 10, 15, ?
	a) 17		b) 19
	c) 21		d) 23

Q.2	A rectangular box 14 cm long, 10 cm wide and 5 cm high is to be made with cardboard. Find the area of cardboard to make that box.
	a) 420 cm2		b) 380 cm2
	c) 520 cm2		d) 480 cm2

Q.3	Simplify the expression: (−5 + 72) [3 − (−6)3] + (−11 − 2)(8 − 12).
	a) 1125		b) 1248
	c) 1459		d) 1585

Q.4	Observe the graph below and answer the question. What is the average of Diesel prices over the years 2020–2022?
	a) 52.5		b) 54.09
	c) 58.8		d) 57.25

Q.5	In ABC, AB = AC. ∠DBC = ∠DCB = 40o. Find x.
	a) 125o		b) 130o
	c) 135o		d) 140o

Q.6	A began a business with $4500 and was joined afterwards by B with $3000. When did B join if the profits at the end of the year were divided in the ratio 2 : 1?
	a) 4 months		b) 2 months
	c) 7 months		d) 3 months

Q.7	Find the area of a triangle whose sides are 50 m, 78 m, 112 m respectively.
	a) 1460 m2		b) 1540 m2
	c) 1080 m2		d) 1680 m2

Q.8	In the figure, ∆ABC and ∆PBC are two isosceles triangles. Find x.
	a) 120o		b) 110o
	c) 115o		d) 100o

Q.9	One year ago, the ratio of Harry and Sam age was 6 : 7 respectively. Four years hence their ratio would become 7 : 8. How old is Sam?
	a) 38 years		b) 30 years
	c) 32 years		d) 36 years

Q.10	Factorise: x(x2 + y2 −z2) − z(x2 + y2 −z2)
	a) (x + y + z) (x2 + y2 + z2)		b) (x - z) (x2 + y2 + z2)
	c) (x + y) (x2 + y2 + z2)		d) (x2 + y2) + (x2 + z2)

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