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

## 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)  ## CBSE Class 8 - Maths - Half Yearly Examination Paper  (2017-18)  ## Square and Square Roots - Worksheet

Q1. Find the Pythagorean triplets whose one member is:
a) 8      b) 12

Q2. Is 2352 is a perfect square number? If not, find the smallest multiple of 2352 which is a perfect square. Find the square root of the new number.

Q3. Find the smallest square number that is divisible by each of the numbers 8, 15, 20.

Q4. There are 2401 students in a school P.T. teacher wants them to stand in rows and columns such that number of rows is equal to the number of columns. Find the number of rows.  ## What is so special about Srinivasa Ramanujan's Magic Square?

You may be familiar with magic squares. Srinivasa Ramanujan also designed his own magic square.

This magic square looks similar to any other square. What is so special about it?

Sum of any rows is 139  ## Data Handling (Worksheet)

Fill in the blanks.

The information collected in term of numbers is called __________.

Data available in an unorganised form are called __________.

The number of times a particular observation occurs in a given data is called its __________.

When the data are large, they can be arranged in groups and each group is known as ___________ or __________.  ## CBSE Class 8 - Maths - Periodic Test 1 (2017-18)

Chapters Covered are:

1. Rational Numbers  