CBSE Class 10 Mathematics 2018 Important Topics, Solved Answers And Model Question Papers

By Malavikka

Maths is a subject that could get you a straight zero or 100. Scoring well in the class 10 maths board exams will not only give you a strong foundation to the concepts but will also give you a lifelong recognition of your ability in maths.

CBSE class 10 mathematics exam is scheduled on 28 March 2018. There is hardly more than a month left for the students to finish their preparations in order to ace the exam. CareerIndia presents to you CBSE class 10 mathematics 2018 important topics, solved questions and model question papers that are important for you to study now.

 

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CBSE Class 10 Mathematics Syllabus

UNIT NUMBER UNIT NAME
1 Number Systems
2 Algebra
3 Co-ordinate Geometry
4 Geometry
5 Trignometry
6 Mensuration
7 Statistics and Probability

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First, let's look at the chapter-wise important topics

Chapter NumberTopic
1 Real Numbers
2 Polynomials
3 Linear Equations in Two Variables
4 Quadratic Equations
5 Arithmetic Progressions
6 Triangles
7 Coordinate Geometry
8 Introduction to Trigonometry
9 Some Applications of Trigonometry
10 Circles
11 Constructions
12 Areas Related to Circles
13 Surface Areas and Volume
14 Statistics
15 Probability

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Solved Answers

Here are some important questions and solved answers for your reference.

Real Numbers

Question

Use Euclid's Algorithm to find the HCF of 135 and 225

Solution

225>135

Use the division lemma to divide the two positive numbers:

225=135 + 1x90

135=90+45

90=2x45

225=135 + 2x45

Since 45 divides 225 and 135 exactly, 45 is the HCF

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Polynomials

Question

If a and b are the zeroes of the quadratic polynomial f(x) = 6x^2 + x = 2, find the value of a/b + b/a

Solution

f(x) = 6x^2 + x = 2

Since a and b are the zeroes of the given polynomial,

Sum of zeroes (a+b) = -1/6

ab = -1/3

a/b + b/a = ((a+b)^2 - 2ab)/ab

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Triangles
 

Triangles

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