In this chapter, we provide RS Aggarwal Solutions for Class 7 Chapter 5 Exponents Ex 5B for English medium students, Which will very helpful for every student in their exams. Students can download the latest RS Aggarwal Solutions for Class 7 Chapter 5 Exponents Ex 5B Maths pdf, free RS Aggarwal Solutions Class 7 Chapter 5 Exponents Ex 5B Maths book pdf download. Now you will get step by step solution to each question.

Textbook | NCERT |

Class | Class 7 |

Subject | Maths |

Chapter | Chapter 5 |

Chapter Name | Exponents |

Exercise | 5B |

**RS Aggarwal Solutions for Class 7 Chapter 5 Exponents Ex 5B Download PDF**

**Question 1.****Solution:**

We can write in standard form

(i) 538 = 5.38 x 10^{2}

(ii) 6428000 = 6.428000 x 10^{6} = 6.428 x 10^{6}

(iii) 82934000000 = 8.2934000000 x 10^{10} = 8.2934 x 10^{10}

(iv) 940000000000 = 9.40000000000 x 10^{11} = 9.4 x 10^{11}

(v) 23000000 = 2.3000000 x 10^{7} = 2.3 x 10^{7}

**Question 2.****Solution:**

(i) Diameter of Earth = 12756000 m = 1.2756000 x 10^{7}m = 1.2756 x 10^{7} m

(ii) Distance between Earth and Moon = 384000000 m = 3.84000000 x 10^{8} = 3.84 x 10^{8}

(iii) Population of India in March 2001 = 1027000000 = 1.027000000 x 10^{9} = 1.027 x 10^{9}

(iv) Number of stars in a galaxy = 100000000000 = 1.00000000000 x 10^{11} = 1 x 10^{11}

(v) The present age of universe = 12000000000 years = 1.2000000000 x 10^{10} years = 1.2 x 10^{10} years

**Question 3.****Solution:**

The expanded form will be

(i) 684502 = 6 x 10^{5} + 8 x 10^{4} + 4 x 10^{3} + 5 x 10^{2} + 2

(ii) 4007185 = 4 x 10^{6} + 0 x 10^{5} + 0 x 10^{4} + 7 x 10^{3} + 1 x 10^{2} + 8 x 10^{1} + 5 x 10^{0}

(iii) 5807294 = 5 x 10^{6} + 8 x 10^{5} + 0 x 10^{4} + 7 x 10^{3} + 2 x 10^{2} + 9 x 10^{1} + 4 x 10^{0}

(iv) 50074 = 5 x 10^{4} + 0 x 10^{3} + 0 x 10^{2} + 7 x 10^{1} + 4 x 10^{0}

**Question 4.****Solution:**

(i) 6 x 10^{4} + 3 x 10^{3} + 0 x 10^{2} + 7 x 10^{1} + 8 x 10^{0}

= 60000 + 3000 + 0 + 70 + 8

= 63078

(ii) 9 x 10^{6} + 7 x 10^{5} + 0 x 10^{4} + 3 x 10^{3} + 4 x 10^{2} + 6 x 10^{1} + 2 x 10^{0}

= 9000000 + 700000 + 0 + 3000 + 400 + 60 + 2

= 9703462

(iii) 8 x 10^{5} + 6 x 10^{4} + 4 x 10^{3} + 2 x 10^{2} + 9 x 10^{1} + 6 x 10^{0}

= 800000 + 60000 + 4000 + 200 + 90 + 6

= 864296

**All Chapter RS Aggarwal Solutions For Class 7 Maths**

—————————————————————————–**All Subject NCERT Exemplar Problems Solutions For Class** **7**

**All Subject NCERT Solutions For Class 7**

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