CREST Mental Maths Olympiad Class 10 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

Study the table graph and answer the question:
The Gross turnover for 2018 - 19 is about what percent of the gross turnover for 2020 - 21?

Financial Statement of a Company Over the Years(million)
Year Gross Turnover $ Profit before interest and depreciation Interest $ Depreciation $ Net Profit $
2016-17 1380.00 380.92 300.25 69.90 10.67
2017-18 1401.00 404.98 315.40 71.12 18.46
2018-19 1540.00 520.03 390.85 80.02 49.16
2019-20 2112.00 599.01 444.44 88.88 65.69
2020-21 2520.00 811.00 505.42 91.91 212.78
2021-22 2758.99 920.00 600.20 99.00 220.80

Q.2

Find the volume of a sphere whose radius is 6 cm.

Q.3

What should be subtracted from (x + y)2 to get (x2 + y2)?

Q.4

In the figure, find x if BC = AD and AB = CD.



Q.5

The circumference of two circles is 132 m and 176 m respectively. What is the difference between the area of the larger circle and the smaller circle?

Q.6

Find the value of question mark (?).
65% of 240 + ? % of 150 = 210

Q.7

What is the mean of first 12 prime numbers?

Q.8

Study the table and answer the question:
During which year did the 'Net Profit' exceed $100 million for the first time?

Financial Statement of a Company Over the Years(million)
Year Gross Turnover $ Profit before interest and depreciation Interest $ Depreciation $ Net Profit $
2016-17 1380.00 380.92 300.25 69.90 10.67
2017-18 1401.00 404.98 315.40 71.12 18.46
2018-19 1540.00 520.03 390.85 80.02 49.16
2019-20 2112.00 599.01 444.44 88.88 65.69
2020-21 2520.00 811.00 505.42 91.91 212.78
2021-22 2758.99 920.00 600.20 99.00 220.80

Q.9

A person covers a certain distance at a speed of 60 km/h and returns to the starting point at a speed of 40 km/h. Find the average speed of the person for the whole journey.

Q.10

In the given figure, find x and y.



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Answers to Previous Year Questions from CREST Olympiads:

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

Answers to Previous Year Questions from CREST Olympiads:

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

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