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Power Play — Practice Quiz

CBSE · Class 8 · Mathematics

Try a 4-question quiz on Power Play for CBSE Class 8 Mathematics: tap an answer to check it and see why. 66 questions in the full chapter test.

66 questions72 flashcards22 formulas & key relations5 concepts

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Quick Quiz: Power Play

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Tap an answer to check it instantly. No sign-up needed for these 4.

1

A sheet of paper is 0.001 cm thick. After 46 folds, the thickness becomes more than 7,00,000 km. Which pair of values matches this paper-folding result and its growth type?

2

A ladder to the Moon is imagined with each step increasing the height by 20 cm. The Earth-Moon distance is 3,84,400 km. Which number of steps matches this linear growth problem?

3

Roxie's weight is assumed to be 45 kg and jaggery costs ₹70 per kg. What is the worth of the jaggery donated in Tulābhāra?

4

Estu's weight is assumed to be 50 kg and wheat costs ₹50 per kg. What is the worth of the wheat donated in Tulābhāra?

66 Questions·
multiple choicetrue false

Sample Questions

1multiple choice
3 marks

A 5-digit password lock has 10 options for each digit slot. How many combinations are possible, and what exponential form represents this?

Show answer

1,00,000; 10^5

Each of the 5 digit slots has 10 choices, so total combinations are 10 × 10 × 10 × 10 × 10 = 10^5 = 1,00,000.

2multiple choice
3 marks

A 3-digit lock and a 2-digit lock are compared. What is the difference in the number of combinations between them?

Show answer

900

A 3-digit lock has 1000 combinations and a 2-digit lock has 100 combinations. The difference is 1000 - 100 = 900.

3multiple choice
3 marks

A line of length 2^4 units is halved 10 times. What is the final length in simplest form?

Show answer

1/64 unit

The length becomes 2^4 ÷ 2^10 = 2^(4-10) = 2^-6 = 1/2^6 = 1/64 unit.

4multiple choice
3 marks

A paper thickness starts at 0.001 cm. After 3 folds, what is the thickness, and what factor increase does that represent?

Show answer

0.008 cm and 8 times

After 3 folds, thickness = 0.001 × 2^3 = 0.008 cm. Since 2^3 = 8, the thickness becomes 8 times.

+62 more questions on Power Play (CBSE Class 8 Mathematics)

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Frequently Asked Questions

What are the important topics in Power Play for CBSE Class 8 Mathematics?
Key topics in Power Play include Exponential Notation and Repeated Multiplication, Combinations and Counting Possibilities, Division of Powers, Zero Exponent, and Negative Exponents, Powers of 10 and Expanded Form. Study these first, then practise questions on each for Class 8 exams.
How many practice questions are there for Power Play?
There are 66 questions on Power Play. Try the 4-question sample quiz on this page first; each answer shows an explanation when you tap it.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Power Play

All CBSE Class 8 Mathematics Practice Quiz

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