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Showing posts with label class8-maths. Show all posts
Showing posts with label class8-maths. Show all posts

# Class 8 Rational Numbers - Question Patterns Related to Addition of Rational Numbers (Solved)

Here, different types of patterns related to addition of rational numbers are given. This will help student understanding the ways to solve these types of questions.

Rational numbers are closed under addition. It means when we add two rational numbers, the resulting number is rational number also.  ## Tuesday, 3 May 2022

For Class 7 / Class 8 / Class 9

The worksheet will help you understand the basic definition of Rational and its properties.  # National Mathematics Day

India celebrates National Mathematics Day on December 22 every year. The day marks the birth anniversary of famous mathematician Srinivasa Ramanujan.

*Typo in the graphic new = knew  # Class 8 - Maths - Cube Roots

Cube root is the inverse operation of a cube.

Symbol ∛ represents a cube-root.

e.g. $\sqrt{8} = 2$,

$\sqrt{216} = 6$

METHODS OF FINDING CUBE ROOT

There are two methods of finding Cube Root

1. Prime Factorisation

2. Estimation Method  ## Tuesday, 13 July 2021

### Class 9 Maths - Important Identities (#class9Maths)(#eduvictors)

Class 9 Maths - Important Identities

(a+b)² = a² + 2ab+ b²

(a–b)² = a² –2ab + b²

a² – b² = (a+b)(a–b)  ## CBSE Class 8 - Mathematics Annual Sample Question Paper(2019-20)

Getting good marks is very important for students of class 8. For this one must practice and attempt sample question papers within time limits.

Here follows a sample question paper on Mathematics subject to assess your knowledge about the subject.

For studying you may refer following books:  ## Chapter 9 - Rational Numbers (Worksheet)

CBSE Class 7 Maths

Fill in the blanks

1. A rational number is a number that can be written in the form p/q, where p and q are ________ and q ____ 0.

2. The ________ of a rational number can never be zero.

3. The rational number _______ is neither negative nor positive.  ## ALGEBRAIC EXPRESSIONS, IDENTITIES AND FACTORISATION

(MCQs)

Q1: Which is the like term as 24a²bc?
(a) 13 × 8a × 2b × c × a
(b) 8 × 3 × a × b × c
(c) 3 × 8 × a × b × c × c
(d) 3 × 8 × a × b × b × c  ## Typical Factorisation Solved Problems

Class 8/9/10 - Mathematics

Q1: Factorise x⁴ + x² + 1

Answer: x⁴ + x² + 1

= (x⁴ + 2x² + 1) - x²

Using identity (A + B)² = A² + B² + 2AB

= (x² + 1)² - x²

Using identity A² - B² = (A + B)(A - B)

= (x² + 1 + x)(x² + 1 - x) [Answer]  ## CBSE Class 8 - Mathematics Annual Sample Question Paper(Set-3) (2018-19)

Getting good marks is very important for students of class 8. For this one must practice and attempt sample question papers within time limits.

Here follows a sample question paper on Mathematics subject to assess your knowledge about the subject.

For studying you may refer following books:  ## CBSE Class 8 - Mathematics Annual Sample Question Paper(Set-2) (2018-19)

Getting good marks is very important for students of class 8. For this one must practice and attempt sample question papers within time limits.

Here follows a sample question paper on Mathematics subject to assess your knowledge about the subject.

For studying you may refer following books:  ## CBSE Class 8 - Mathematics Annual Sample Question Paper(Set-1) (2018-19)

Getting good marks is very important for students of class 8. For this one must practice and attempt sample question papers within time limits.

Here follows a sample question paper on Mathematics subject to assess your knowledge about the subject.

For studying you may refer following books:  ## Data Handling - Reading Graphs

Worksheet

Directions (Q. 1-5): Following bar chart shows the ratio of expenditure to income of three companies A, B and C during the period 2007—2012.  ## Mathematics - Types of Quadrilaterals

(Worksheet)

Fill in the blanks.

1. A quadrilateral with all angles 90° is either a _______ or a _________.

2. In a parallelogram opposite angles are ______.

3. In a parallelogram adjacent angles are ______.

4. A quadrilateral with all sides equal is either a _______ or a ________.

5. A square is a rectangle in which ______________________________.  ## CBSE Class 8 - Maths - Half Year SampleQuestion Paper - (2018-19)  ## CBSE Class 8 - Maths - Term 1 SampleQuestion Paper - (2018-19)  ## Chapter - 05 Data Handling

Class 8 Mathematics
Revision Notes

Data Handling: Deals with the process of collecting data, presenting it and getting result.

• Data mostly available to us in an unorganised form is called raw data.

• Grouped data can be presented using histogram. Histogram is a type of bar diagram, where the class intervals are shown on the horizontal axis and the heights of the bars show the frequency of the class interval. Also, there is no gap between the bars as there is no gap between the class intervals.

• In order to draw meaningful inferences from any data, we need to organise the data systematically.

• Frequency gives the number of times that a particular entry occurs.

• Raw data can be 'grouped' and presented systematically through 'grouped frequency distribution'.

Statistics: The science which deals with the collection, presentation, analysis and interpretation of numerical data.  ## Divisibility Rules of Various Numbers

(2-25)

Divisibility by 2:
A number is divisible by 2 if its unit’s digit is even or 0.

Divisibility by 3:
A number is divisible by 3 if the sum of its digits are divisible by 3.

Divisibility by 4:
A number is divisible by 4 if the last 2 digits are divisible by 4, or if the last two digits are 0’s.

Divisibility by 5:
A number is divisible by 5 if its unit’s digit is 5 or 0.

Divisibility by 6:
A number is divisible by 6 if it is simultaneously divisible by 2 and 3.  ## Wednesday, 16 May 2018

### CBSE Class 8 - Chapter 3: Understanding Quadrilaterals (MCQs) (#cbsenotes)(#eduvictors)

1. A simple closed curve made up of only _____________ is called a polygon .

(a) curves
(b) line segments
(c) lines
(d) closed curves

2. A polygon with minimum number of sides is

(a) Pentagon
(b) Square
(c) triangle
(d) angle

3. Polygons that have no portions of their diagonals in their exteriors are called

(a) Squares
(b) triangles
(c) convex
(d) concave

4. Polygons that have any portions of their diagonals in their exteriors are called

(a) Squares
(b) triangles
(c) convex
(d) concave  ## CBSE Class 8 - Maths - Half Yearly Examination Paper - Set 2 (2017-18)  