AP Board Class 8 Maths Chapter 4 Exponents and Powers InText Questions Textbook Solutions PDF: Download Andhra Pradesh Board STD 8th Maths Chapter 4 Exponents and Powers InText Questions Book Answers ~ HSSlive: Plus One & Plus Two Notes & Solutions for Kerala State Board

AP Board Class 8 Maths Chapter 4 Exponents and Powers InText Questions Textbook Solutions PDF: Download Andhra Pradesh Board STD 8th Maths Chapter 4 Exponents and Powers InText Questions Book Answers

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Andhra Pradesh Board Class 8th Maths Chapter 4 Exponents and Powers InText Questions Textbooks Solutions PDF

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Andhra Pradesh State Board Class 8th Maths Chapter 4 Exponents and Powers InText Questions Books Solutions

Board	AP Board
Materials	Textbook Solutions/Guide
Format	DOC/PDF
Class	8th
Subject	Maths
Chapters	Maths Chapter 4 Exponents and Powers InText Questions
Provider	Hsslive

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AP Board Class 8th Maths Chapter 4 Exponents and Powers InText Questions Textbooks Solutions with Answer PDF Download

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8th Class Maths 4th Lesson Exponents and Powers InText Questions and Answers

Do this

Question 1.
Simplify the following. (Page No. 81)
i) 3⁷ × 3³
ii) 4 × 4 × 4 × 4 × 4
iii) 3⁴ × 4³
Answer:
(i) 3⁷ × 3³ = 3⁷ + 3³ = 3¹⁰ [∵ a^m × aⁿ = a^m+n]
(ii) 4 × 4 × 4 × 4 × 4 = 4⁵ [∵ a × a × a × ……. m times = a^m]
(iii) 3⁴ × 4³ = 3⁴⁺³ = 3⁷ [∵ a^m × aⁿ = a^m+n]

Question 2.
The distance between Hyderabad and Delhi is 1674.9 km by rail. How would you express this in centimetres? Also express this in the scientific form. (Page No. 81)
Answer:
Distance from Hyderabad to Delhi is
= 1674.9 km = 1674.9 × 1000 m = 1674900 mts
= 1674900 × 100 cm
= 167490000 cm
= 16749 × 10⁴ cm

Question 3.
What is 10^-10 equal to? (Page No. 83)
Answer:
10^-10 = 11010 [∵ a^-n = 1𝑎𝑛]

Question 4.
Find the multiplicative inverse of the following. (Page No. 83)
Answer:

Question 5.
Expand the following numbers using exponents. (Page No. 84)
Answer:
i) 543.67
= (5 × 100) + (4 × 10) + (3 × 10⁰) + (610) + (7102)
= (5 × 10²) + (4 × 10) + (3 × 10⁰) + (6 × 10^-1) + (7 × 10^-2) [∵ aⁿ = a^-n]

ii) 7054.243
= (7 × 1000) + (0 × 100) + (5 × 10) + (4 × 10⁰) + (210) + (4100) + (31000)
= (7 × 10³) + (0 × 10²) + (5 × 10¹) + (4 × 10⁰) + (2 × 10^-1) + (4 × 10^-2) + (3 × 10^-3)

iii) 6540.305
= (6 × 1000) + (5 × 100) + (4 × 10) + (0 × 10⁰) + (310) + (0100) + (51000)
= (6 × 10³) + (5 × 10²) + (4 × 10¹) + (0 × 10⁰) + (3 × 10^-1) + (0 × 10^-2) + (5 × 10^-3)

iv) 6523.450
= (6 × 1000) + (5 × 100) + (2 × 10) + (3 × 10⁰) + (410) + (5100) + (01000)
= (6 × 10³) + (5 × 10²) + (2 × 10¹) + (3 × 10⁰) + (4 × 10^-1) + (5 × 10^-2) + (0 × 10^-3)

Question 6.
Simplify and express the following as single exponent. (Page No. 85)
(i) 2^-3 × 2^-2
(ii) 7^-2 × 7⁵
(iii) 3⁴ × 3^-5
(iv) 7⁵ × 7^-4 × 7^-6
(v) m⁵ × m^-10
(vi) (-5)^-3 × (-5)^-4
Answer:
(i) 2^-3 × 2^-2 = 2^(-3)+(-2) = 2^-5 = =125 = 12×2×2×2×2 = 132 [∵ a^m × aⁿ = a^m+n]
(ii) 7^-2 × 7⁵ = 7^-2+5 = 7³ = 343
(iii) 3⁴ × 3^-5 = 3^4+(-5) = 3^-1 = 13 [∵ a^-n = 1𝑎𝑛]
(iv) 7⁵ × 7^-4 × 7^-6 = 7^5+(-4)+(-6) = 7^5-10 = 7^-5 = =175
(v) m⁵ × m^-10 = m^5+(-10) = m^-5 = =1𝑚5
(vi) (-5)^-3 × (-5)^-4 = (-5)^(-3)+(-4) = (-5)^-7 = 1(−5)7 = –157

Question 7.
Change the numbers into standard form and rewrite the statements. (Page No. 93)
i) The distance from the Sun to Earth is 149,600,000,000 m
Answer:
149,600,000,000 m = 1496 × 10⁸ m

ii) The average radius of the Sun is 695000 km
Answer:
695000 km = 695 × 10³ km

iii) The thickness of human hair is in the range of 0.005 to 0.001 cm.
Answer:
0.005 to 0.001 cm
= 51000 to 11000 cm = 5 × 10^-3 to 1 × 10^-3 cm

iv) The height of Mount Everest is 8848 m
Answer:
8848 m, itself is a standard form.

Question 8.
Write the following numbers in the standard form. (Page No. 93)
The standard form of the following numbers are
Answer:
(i) 0.0000456 = 45610000000 = 456 × 10^-7
(ii) 0.000000529 = 5291000000000 = 529 × 10⁹
(iii) 0.0000000085 = 8510000000000 = 85 × 10¹⁰
(iv) 6020000000 = 602 × 10000000 = 602 × 10⁷
(v) 35400000000 = 354 × 100000000 = 354 × 10⁸
(vi) 0.000437 × 10⁴ = 4371000000 × 10⁴
= 437 × 10^-6 × 10⁴
= 437 × 10^(-6)+4
= 437 × 10^-2

AP Board Textbook Solutions PDF for Class 8th Maths

Andhra Pradesh Board Class 8th Maths Chapter 4 Exponents and Powers InText Questions Textbooks for Exam Preparations

Andhra Pradesh Board Class 8th Maths Chapter 4 Exponents and Powers InText Questions Textbook Solutions can be of great help in your Andhra Pradesh Board Class 8th Maths Chapter 4 Exponents and Powers InText Questions exam preparation. The AP Board STD 8th Maths Chapter 4 Exponents and Powers InText Questions Textbooks study material, used with the English medium textbooks, can help you complete the entire Class 8th Maths Chapter 4 Exponents and Powers InText Questions Books State Board syllabus with maximum efficiency.

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