ML Aggarwal Exponents and Powers MCQs Class 7 ICSE Maths Solutions

ML Aggarwal Exponents and Powers MCQs Class 7 ICSE Maths Solutions. We Provide Step by Step Answer of  MCQs Questions for Exponents and Powers as council prescribe guideline for upcoming board exam. Visit official Website CISCE for detail information about ICSE Board Class-7.

ML Aggarwal Exponents and Powers MCQs Class 7 Maths Solutions

Board ICSE
Publications Avichal Publishig Company (APC)
Subject Maths
Class 7th
Chapter-4 Exponents and Powers
Writer ML Aggarwal
Book Name Understanding
Topics Solution of MCQs
Edition 2023-2024

Exponents and Powers MCQs

ML Aggarwal Class 7 ICSE Maths Solutions

Page-98

Mental Maths

Question 1. Fill in the blanks:

(i) In the expression (-5)9, exponent = ……… and base = ………..
(ii) If the base is −3/4 and exponent is 5, then exponential form is ………
(iii) The expression (x2y5)3 in the simplest form is ………
(iv) If (100)0 = 10n, then the value of n is ……..

Question 1. Fill in the blanks:
(viii) 35070000 = 3.507 × 10….
(ix) If (-2)n = -128, then n = ……..

Answer:

(i) In the expression (-5)9, exponent = 9 and base = -5
(ii) If the base is −3/4 and exponent is 5, then exponential form is (-3/4)5
(iii) The expression (x2y5)3 in the simplest form is (x2)3×(y5)3 = x6y15
(iv) If (100)0 = 10n, then the value of n is 0

Question 1. Fill in the blanks:

(viii) 35070000 = 3.507 × 107
(ix) If (-2)n = -128, then n = (-2)7

Question 2. State whether the following statements are true (T) or false (F):

(i) If a is a rational number then am × an = am×n

(ii) 23 × 32 = 65.
(iii) The value of (-2)-3 is −1/8.

(iv) The value of the expression 29 × 291 – 219 × 281 is 1.
(v) 56 ÷ (-2)6 = −5/2
(vi) 50 × 30 = 80

(vii) 23/ 7<(2/7)3

(viii) (10 + 10)4 = 104 + 104.
(ix) x0 × x0 = x0 ÷ x0, where x is a non-zero rational number.
(x) 49 is greater than 163.
(xi) xm + xm = x2m, where x is a non-zero rational number and m is a positive integer.
(xii) (4/3)5×(5/7)5=(.4⁄3+.5⁄7)5

Answer:

(i) If a is a rational number then am × an = am×n  False

(ii) 23 × 32 = 65. False
(iii) The value of (-2)-3 is −1/8. True

(iv) The value of the expression 29 × 291 – 219 × 281 is 1. False
(v) 56 ÷ (-2)6 = −5/2 False
(vi) 50 × 30 = 80 True

(vii) 23/ 7<(2/7)3 False

(viii) (10 + 10)4 = 104 + 104. False
(ix) x0 × x0 = x0 ÷ x0, where x is a non-zero rational number.  True
(x) 49 is greater than 163. True
(xi) xm + xm = x2m, where x is a non-zero rational number and m is a positive integer. False
(xii) (4/3)5×(5/7)5=(.4⁄3+.5⁄7)5 False


Exponents and Powers MCQs

ML Aggarwal Class 7 ICSE Maths Solutions

Page-99

Choose the correct answer from the given four options (3 to 12)

Question 3. a × a × a × b × b × b is equal to

(a) a3b2
(b) a2b3
(c) (ab)3
(d) a6b6

Answer:

(c) (ab)3

Question 4. (-2)3 × (-3)2 is equal to

(a) 65
(b) (-6)6
(c) 72
(d) -72

Answer:

(d) -72

Question 5. The expression (pqr)3 is equal to

(a) p3qr
(b) pq3r
(c) pqr3
(d) p3q3r3

Answer:

(d) p3q3r3

Question -6.

Question -6.

Answer:

Question -6.

Question- 7.

Question- 7.

Answer:

Question- 7.

Question 8. The value of (530 × 520) ÷ (55)9 in the exponential form is

(a) 5-5
(b) 55
(c) 550
(d) 595

Answer:

(b) 55

Question 9. The law (𝑎/𝑏)n=an /bn does not hold when

(a) a = 3, b = 2
(b) a = -2, b = 3
(c) n = 0
(d) b = 0

Answer:

(d) b = 0

Question -10

Question -10

Answer:

Question -10

Question -11.

Question -11.

Answer:

Question -11.

Question -12. The value of 5-1 – 6-1 is

(a) 1/30
(b) −1/30
(c) 30
(d) -30

Answer:

(a) 1/30

Question- 13. The value of (6-1 – 8-1)-1 is

(a) −1/2
(b) -2
(c) 1/24
(d) 24

Answer:

(d) 24


Exponents and Powers MCQs

ML Aggarwal Class 7 ICSE Maths Solutions

Page-100

Question -14.
Question -14.

Answer:

Question -14.

Question -15. If 23 + 13 = 3x, then the value of x is

(a) 0
(b) 1
(c) 2
(d) 3

Answer:

(c)  x = 2

(ML Aggarwal Exponents and Powers MCQs Class 7 ICSE Maths Solutions)

Question 16. The standard form of 751.65 is

(a) 7.5165 × 102
(b) 75.165 × 101
(c) 7.5165 × 104
(d) 7.51 × 102

Answer:

(a) 7.5165 × 102

Question -17. The usual form of 5.658 × 105 is

(a) 5658
(b) 56580
(c) 565800
(d) 5658000

Answer:

5.658 × 105  = 565800 (c)

Question- 18. Which of the following numbers is in the standard form?

(a) 26.57 × 104
(b) 2.657 × 104
(c) 265.7 × 103
(d) 0.2657 × 106

Answer:

(b) 2.657 × 104

—  : End of ML Aggarwal Exponents and Powers MCQsClass 7 ICSE Maths Solutions :–

Return to –  ML Aggarwal Maths Solutions for ICSE Class -7

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