Exponents Class- 7th RS Aggarwal Exe-5 B Goyal Brothers ICSE Math Solution . We provide step by step Solutions of lesson-5 Exponents for ICSE Class-7 Foundation RS Aggarwal Mathematics of Goyal Brothers Prakashan . Our Solutions contain all type Questions of Exe-5 B to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-7 Mathematics.
Laws of exponents with answers pdf multiple choice questions on exponents and powers pdf.
Exponents Class- 7th RS Aggarwal Exe-5 B Goyal Brothers ICSE Math Solution
| Board | ICSE |
| Publications | Goyal brothers Prakashan |
| Subject | Maths |
| Class | 7th |
| Chapter-5 | Exponents |
| Writer | RS Aggrawal |
| Book Name | Foundation |
| Topics | Solution of Exe-5 B |
| Academic Session | 2023 – 2024 |
Exercise – 5 B
MULTIPLE CHOICE QUESTIONS
Exponents Class- 7th RS Aggarwal Exe-5 B Goyal Brothers ICSE Math Solution
Choose the correct option in each of the following :
1. 32 + 23 is equal to :
(a) 15
(b) 16
(c) 17
(d) 18
Answer: option (c) 17 is correct.
2. (7 – 5)5 is equal to :
(a) 6
(b) 8
(c) 16
(d) 32
Answer: option (d) 32 is correct.
3. (-5)5 is equal to :
(a) 20
(b) -125
(c) 625
(d) -1024
Answer: option (c) 625 is correct.
4. (-3/5)5 is equal to :
(a) (-243/3125)
(b) (-81/625)
(c) (81/625)
(d) (512/1875)
Answer: option (a) (-243/3125) is correct.
5. The value of x such that (3/7)3 × (3/7)-8 = (3/7)2x+3 is :
(a) -4
(b) -2
(c) 0
(d) 1
Answer: option (a) -4 is correct.
6. The value of [{(-1/3)-2 }-1 ]2 is :
(a) 81
(b) -81
(c) (1/81)
(d) -(1/81)
Answer: option (c) (1/81) is correct.
7. The number 34613000 when expressed in exponential form is equal to :
(a) 3461.3 × 103
(b) 3.4613 × 107
(c) 0.34613 × 109
(d) 34.613 × 105
Answer: option (b) 3.4613 × 107 is correct.
MENTAL MATHS
Exponents Class- 7th RS Aggarwal Exe-5 B Goyal Brothers ICSE Math Solution
1. Which is larger ?
(i) 23 or 32
Answer: 32
(ii) 25 or 52
Answer: 25
(iii) 37 or 73
Answer: 37
2. Fill in the blanks :
(i) In an exponential form xm ; is called the base.
(ii) We have : am/an = (1/an-m) if n > m.
(iii) Any number to the power 0 is equal to 1.
(iv) The exponential form is also called power notation.
(v) The reciprocal of xa is equal to x to the power (-a).
3. Write true (T) or false (F) :
| Statements | True/False |
| (i) For any non-zero number a, we have (am)n = am+n | F |
| (ii) If a and b are non-zero numbers, then {(a/b)m }n = (b/a)-mn | T |
| (iii) For a non-zero number x; (xm ×xn) is equal to x to the power (m + n). | T |
| (iv) If a number p is multiplied n times, then the resulting number is pn . | T |
| (v) In an exponential notation xn ; n is called the index. | T |
— : end of Exponents Class- 7th RS Aggarwal Exe-5 B Goyal Brothers ICSE Math Solution:–
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