NCERT Solutions for Class 8 Maths Chapter 12 Exercise 12.1 Exponents and Powers in English Medium and Hindi Medium to use online free without any login and password. Important questions for practice are given at the end of the page.

## NCERT Solutions for Class 8 Maths Chapter 12 Exercise 12.1

If you need solutions in Hindi, Click for Hindi Medium solutions of 8 Maths Exercise 12.1

### 8 Maths Chapter 12 Exercise 12.1 in Hindi

To get the solutions in English, Click for English Medium solutions.

##### MCQ – Important Questions

Select the correct answers in each of the following:

1. If y be any non-zero integer, then y0 is equal to

(a) 1 (b) 0 (c) – 1 (c) Not defined

2. The multiplicative inverse of 10^(–100) is

(a) 10 (b) 100 (c) 10^100 (d) 10^(–100)

3. If x be any non-zero integer, then x^–1 is equal to

(a) x (b) 1/x (c) – x (c) – 1/x

4. The usual form for 2.03 × 10^–5

(a) 0.203 (b) 0.00203 (c) 203000 (d) 0.0000203

5. Cube of ½ − is

(a) 1/8 (b) 1/16 (c) −1/8 (d) −1/16

###### Fill in the blanks:

1. The multiplicative inverse of 10^10 is ___________.

2. The expression for 8^–2 as a power with the base 2 is _________.

3. Very large numbers can be expressed in standard form by using _________ exponents.

4. If 36 = 6 × 6 = 6^2, then 1/36 expressed as a power with the base 6 is ________.

5. Very small numbers can be expressed in standard form by using _________ exponents.

###### State whether the following statements are True or False:

1. 24.58 = 2 × 10 + 4 × 1 + 5 × 10 + 8 × 100

2. The expression for 4^–3 as a power with the base 2 is 2^6.

3. The standard form for 203000 is 2.03 × 10^5

4. The standard form for 0.000037 is 3.7 × 10^–5.

5. Large numbers can be expressed in the standard form by using positive exponents.

###### Try These

1. Divide 293 by 10,00,000 and express the result in standard form.

2. By what number should (–15)^–1 be divided so that quotient may be equal to (–15)^–1?

3. Express the product of 3.2 × 10^6 and 4.1 × 10^–1 in the standard form.

4. By what number should we multiply (–29)^0 so that the product becomes (+29)^0.

5. Pluto is 59,1,30,00, 000 m from the sun. Express this in the standard form.