Write the numbers in usual form. 0 . 001234 × 10 5

Given, To write 0 . 001234 × 10 5 in usual form. In expanded exponential form, the place value of the digits is represented in terms of the powers of 10 . Here, One’s place is represented by 10 0 , tens place is represented by 10 1 , hundreds place is represented by 10 2 and so on. Thus, 2 . 00097 = 2 × 10 0 + 0 × 1 10 + 0 × 1 100 + 0 × 1 1000 + 9 × 1 10000 + 7 × 1 100000 Since, 1 10 = 10 - 1 , 1 100 = 10 - 2 , 1 1000 = 10 - 3 , 1 10000 = 10 - 4 2 . 00097 = 2 × 10 0 + 9 × 10 - 4 + 7 × 10 - 5 Therefore, the expanded form of the given number is shown above.

Write the numbers in usual form. 2 . 4 × 10 5

Given, To write 0 . 001234 × 10 5 in usual form. In expanded exponential form, the place value of the digits is represented in terms of the powers of 10 . Here, One’s place is represented by 10 0 , tens place is represented by 10 1 , hundreds place is represented by 10 2 and so on. Thus, 2 . 00097 = 2 × 10 0 + 0 × 1 10 + 0 × 1 100 + 0 × 1 1000 + 9 × 1 10000 + 7 × 1 100000 Since, 1 10 = 10 - 1 , 1 100 = 10 - 2 , 1 1000 = 10 - 3 , 1 10000 = 10 - 4 2 . 00097 = 2 × 10 0 + 9 × 10 - 4 + 7 × 10 - 5 Therefore, the expanded form of the given number is shown above.

Write the numbers in usual form. 7 . 5 × 10 - 3

Given, To write 7 . 5 × 10 - 3 in usual form. In expanded exponential form, the place value of the digits is represented in terms of the powers of 10 . Here, One’s place is represented by 10 0 , tens place is represented by 10 1 , hundreds place is represented by 10 2 and so on. Thus, 2 . 00097 = 2 × 10 0 + 0 × 1 10 + 0 × 1 100 + 0 × 1 1000 + 9 × 1 10000 + 7 × 1 100000 Since, 1 10 = 10 - 1 , 1 100 = 10 - 2 , 1 1000 = 10 - 3 , 1 10000 = 10 - 4 2 . 00097 = 2 × 10 0 + 9 × 10 - 4 + 7 × 10 - 5 Therefore, the expanded form of the given number is shown above.

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'I Did It' Mathematics>Chapter 4 - Exponents>Exercise 4.2

Rupesh Pathak and Vaishali Bhatia Solutions for Chapter: Exponents, Exercise 3: Exercise 4.2

Author:Rupesh Pathak & Vaishali Bhatia

Rupesh Pathak Mathematics Solutions for Exercise - Rupesh Pathak and Vaishali Bhatia Solutions for Chapter: Exponents, Exercise 3: Exercise 4.2

Attempt the practice questions on Chapter 4: Exponents, Exercise 3: Exercise 4.2 with hints and solutions to strengthen your understanding. 'I Did It' Mathematics solutions are prepared by Experienced Embibe Experts.