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Exponents and Power (Mathematics) Class 8 - NCERT Questions
Q 1.
Evaluate.
SOLUTION:
Q 2.
Simplify and express the result in power notation with positive exponent.
SOLUTION:
Q 3.
Find the value of
SOLUTION:
Q 4.
Evaluate
SOLUTION:
Q 5.
SOLUTION:
Q 6.
Evaluate
SOLUTION:
Q 7.
Simplify
SOLUTION:
Q 8.
Express the following numbers in standard form.
(i) 0.0000000000085
(ii) 0.00000000000942
(iii) 6020000000000000
(iv) 0.00000000837
(v) 31860000000
SOLUTION:
Q 9.
Express the following numbers in usual form.
SOLUTION:
Q 10.
Express the number appearing in the following statements in standard form.
(i) 1 micron is equal to 1/1000000m
(ii) Charge of an electron is
0.000,000,000,000,000,000,16 coulomb.
(iii) Size of a bacteria is 0.0000005 m.
(iv) Size of a plant cell is 0.00001275 m.
(v) Thickness of a thick paper is 0.07 mm.
SOLUTION:
Q 11.
In a stack, there are 5 books each of thickness 20 mm and 5 paper sheets each of thickness 0.016 mm. What is the total thickness of the stack.
