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Class 8 Math: Exponents and Powers
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Avg score: 30% • Most missed: “Distance between A to C is 2.1 × 1011 and that of A to B is 3.12 × 109. Find the…”

MCQs on powers with negative exponents, exponents laws, using exponents to express small numbers in standard form, comparison between very small and large numbers.
 

Class 8 Math: Exponents and Powers
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17 Questions

1. What is 2-3?
2. Compare the radius of circle P (r1 = 10.2 × 10-6) with the radius of circle B (r1 = 0.2 × 10-5).
3. Distance between A to C is 2.1 × 1011 and that of A to B is 3.12 × 109. Find the distance between B and C.
4. Find the value of 16-2 × 1614.
5. Express the following in the standard form: 0.000000021.
6. What is the value of 10-6?
7. Compare volumes of cube A having side 2 × 102 m and cube B having side 1 × 101 m.
8. Evaluate \((\frac{21^{29}}{21^5})\).
9. Find the value of (23)2.
10. Find the usual form of 2.33 × 103.
11. Find the value of \(\frac{1}{8^{-2}}\).
12. What is the Usual form of 16.8 × 105?
13. What is the standard form of 80460000?
14. Mass of object A is 120000 and that of B is 0.240. Compare their masses.
15. Mass of a neutron is 1.675 × 10-27 and mass of proton is 1.672 × 10-27. Find the total mass.
16. What is the multiplicative inverse of 10-3?
17. Find the value of 3-2.

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