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**class7-maths**. Show all posts

**class7-maths**. Show all posts

## Tuesday, 28 December 2021

### CBSE Class 7 - Maths - Solved Problems on Direct Variation #cbseclass7 #maths #directvariation #class7maths #eduvictors

## Wednesday, 22 December 2021

### National Mathematics Day #mathematics #eduvictors

# National Mathematics Day

**December 22**every year. The day marks the birth anniversary of famous mathematician Srinivasa Ramanujan.

*Typo in the graphic new = knew

## Friday, 2 July 2021

### CBSE Class 7 - Maths - Fractions - Solved Problems (#class7Maths)(#eduvictors)

# CBSE Class 7 - Maths - Fractions - Solved Problems

A **fraction** is a part of whole.

Fractions are of various types. Commonly used fractions are mixed fractions, proper fractions

e.g. $ \frac{13}{4}, 2\frac{3}{4}, \frac{1}{2} $ etc.

**COMPARE FRACTIONS**

We can compare two or more fractions by taking the L.C.M of the denominators of the given fractions. Fraction with a greater denominator is bigger and vice versa.

**Q1**: Compare $\frac{23}{52} \textrm{ and } \frac{19}{22} $

Answer: $\frac{23}{52} > \frac{19}{22}$

## Saturday, 20 March 2021

### Class 7 Maths Annual Sample Question Paper (Set-1) 2020-21 (#eduvictors)(#cbsenotes)(#class7Maths)

# Class 7 Maths Annual Sample Question Paper (Set-1) 2020-21

Learning is a continual process. To improve scores, the best way is to learn and practice. Solving question papers help students to evaluate their knowledge and familarise with different types of question patterns being asked in examination.

Eduvictors provides CBSE Previous Year Papers and Sample Question Papers for Class 7 Maths, Science, Social, English, Hindi and Sanskrit with/without solutions to help students in their board exam preparation.

1. Mathematics for Class 7 (Examination 2020-2021) R S Aggarwal

Here attached the Maths Sample Question Paper (2020-2021).

## Tuesday, 26 November 2019

### CBSE Class 7 Maths - Chapter 9 - Rational Numbers (Worksheet)(#class7Maths)(#eduvictors)

## Chapter 9 - Rational Numbers (Worksheet)

**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.

## Tuesday, 30 July 2019

### CBSE Class 7 Maths - Lines and Angles - Worksheet -2 (#eduvictors)(#cbsenotes)

**Lines and Angles (Worksheet -2)**

**CBSE Class 7 Maths**

*Fill in the blanks*1. A/An _________ is formed when lines or line segments meet.

2. The lines that form an angle are called the _______ or the _______ of the angle.

3. The common end point is called the _________ of the angle.

4. The angle formed by two lines or line segments can be a/an _______ angle, where the measure of the angle is less than 90°.

## Thursday, 2 May 2019

### Class 7 - Maths - Properties of Integers (#cbsenotes)(#eduvictors)(#class7maths)

## Class 7 - Mathematics - Properties of Integers

1. Closure Property Under Addition

Integers are closed under addition, i.e. for any two integers,a and b, a+b is an integer.

eg: 3 + 4 = 7

-9 + 7 = 2

2. Closure Property under Subtraction:

Integers are closed under subtraction, i.e. for any two integers,a and b, a-b is an integer.

eg:

-21 -(-9) = -12

8 -3 = 5

3. Closure Property under Multiplication:

Integers are closed under multiplication, i.e. for any two integers,a and b, ab is an integer.

e.g.

5 × 6 = 30

-3 × -8 = 24

-3 × 7 = -21

## Sunday, 28 April 2019

### CBSE Class 7 - Maths - Chapter 1 - Integers and Operations On Integers (#cbsenotes)(#eduvictors)

## Integers and Operations On Integers

**Class 7 - Mathematics**

**positive integer**.

e.g. 6 + 4 = 10

2. When two negative integers are added, we get a

**negative integer**.

e.g. -6 + (-3) = -9

3. When a positive and a negative integer are added, the sign of the sum is always

**the sign of the bigger number**of the two, without considering their signs.

e.g. 45 + -25 = 20 and -45 + 20 = -25

4. Additive Inverse

The

**additive inverse**of any integer a is - a, and the additive inverse of (- a) is a.

e.g. Additive inverse of (-15) = - (-15) = 15

## Sunday, 28 October 2018

### CBSE Class – VII - Mathematics - Chapter 6 – Simple Linear Equations - ASSIGNMENT (#cbenotes)(#eduvictors)

## Chapter 6 – Simple Linear Equations ASSIGNMENT

POINTS TO REMEMBER

1.

**Equation**: An equation is a statement which states that two expressions are equal.

2. To solve an equation means to find the value of the variable (unknown quantity) used in it.

Note: An equation remains unchanged if

(i) the same number is added to each side of the equation. .

(ii) the same number is subtracted from each side of the equation.

(iii) the same number is multiplied to each side of the equation.

(iv) Each side of the equation is divided by the same non-zero number.

(v) In transposing any term of an equation from one side to another, then its sign is reversed is

(a) from positive to negative and from negative to positive

(b) from multiplication to division and from division to multiplication.

3.

**In equation**:

It is a statement of inequality between two expressions involving a single variable with the highest power one.

4.

**Replacement set**

For a given inequation, the set from which the values of its variable are taken is called the replacement set or domain of the variable.

## Monday, 1 October 2018

### CBSE Class 8 - Mathematics - Chapter 1 - Integers (Key Points) (#cbsenotes)(#eduvictors)

##
Mathematics - Chapter 1 - Integers

(Key Points)

**⑴**Integers are a bigger collection of numbers which is formed by whole numbers and their negatives.

**⑵**You have studied in the earlier class, about the representation of integers on the number line and their addition and subtraction.

**⑶**We now study the properties satisfied by addition and subtraction.

(a) Integers are closed for addition and subtraction both. That is,

*a + b*and

*a – b*are again integers, where a and b are any integers.

(b) Addition is commutative for integers, i.e.,

*a + b = b + a*for all integers a and b.

(c) Addition is associative for integers, i.e.,

*(a + b) + c = a + (b + c)*for all integers a, b and c.

(d) Integer 0 is the identity under addition. That is,

*a + 0 = 0 + a = a*for every integer a.

**⑷**We studied, how integers could be multiplied and found that product of a positive and a negative integer is a negative integer, whereas the product of two negative integers is a positive integer. For example,

*– 2 × 7 = – 14*and

*– 3 × – 8 = 24*.

**⑸**Product of even number of negative integers is positive, whereas the product of an odd number of negative integers is negative.

## Wednesday, 19 September 2018

### Class 7 - Mathematics - Chapter - Algebraic Expressions (Very Short Questions and Answers) (#cbsenotes)(#eduvictors)

## Algebraic Expressions

**(Short Questions and Answers)**

**Class 7 - Mathematics**

*Worksheet*

**Fill in the blanks**

Q1: An algebraic expression containing three terms is called a __________.

Q2: Factors of -5x²y²z are : _____________________________________.

Q3: Sum or difference of two like terms is a ______________.

Q4: -5a²b and -5b²a are ________________ terms.

Q5: In the expression 2πr, the algebraic variable is ___________ and 2π is ________.

## Saturday, 8 September 2018

### Class 7 - Maths - Lines and Angles (Worksheet) (#cbsenotes)(#eduvictors)

## Lines and Angles (Worksheet)

**Directions: Fill in the blanks to make the statements true.**

1. If sum of measures of two angles is 90°, then the angles are _________.

3. If the sum of measures of two angles is 180°, then they are _________.

3. A transversal intersects two or more than two lines at _________ points.

## Friday, 24 August 2018

### Divisibility Rules of Various Numbers - CBSE Class 6-12 - NTSE, Entrance Tests - Mathematics Tips (#cbsenotes)(#entrancetests)(#eduvictors)

## Divisibility Rules of Various Numbers

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, 11 July 2018

### CBSE Class 7 - Maths - Exponents and Powers (MCQs) (#cbsenotes)(#eduvictors)

##
Exponents and Powers

(MCQs)

**Q1: Simplify 2³**

(a) 6

(b) 8

(c) 10

(d) 222

**Q2: What is the value of 3⁰?**

(a) 0

(b) 1

(c) 3

(d) Not Defined

**Q3: Value of 12² is _____**

(a) 2

(b) 24

(c) 144

(d) 0

## Tuesday, 7 November 2017

### CBSE Class 7 - Mathematics - Fractions and Decimals NCERT Exercise 2.6 (#eduvictors) (#cbsenotes) (#ncertanswers)

## Mathematics - Fractions and Decimals - NCERT Exercise 2.6

**Question 1: Find:**

**(i) 0.2 ✕ 6 (ii) 8 ✕ 4.6 (iii) 2.71 ✕ 5**

**(iv) 20.1 ✕ 43 (v) 0.05 ✕ 7 (vi) 211.02 ✕ 4**

**(vii) 2 ✕ 0.86**

Answer:

(i) 0.2 ✕ 6 = 1.2

(ii) 8 ✕ 4.6 = 36.8

(iii) 2.71 ✕ 5 = 13.55

(iv) 20.1 ✕ 4 = 80.4

(v) 0.05 ✕ 7 = 0.35

(vi) 211.02 ✕ 4 = 844.08

(vii) 2 ✕ 0.86 = 1.72

## Thursday, 19 October 2017

### CBSE Class 7 - Mathematics - Chapter – 12 - Algebraic Expressions - NCERT Solution 12.1 (#NCERTAnswers)

##
Chapter – 12 - Algebraic Expressions

NCERT Exercise 12.1

**Question 1: Get the algebraic expressions in the following cases using variables, constants and arithmetic operations:**

(i) Subtraction of z from y .

(ii) One-half of the sum of numbers x and y .

(iii) The number z multiplied by itself.

(iv) One-fourth of the product of numbers p and q .

(v) Numbers x and y both squared and added.

(vi) Number 5 added to three times the product of m and n .

(vii) Product of numbers y and z subtracted from 10.

(viii) Sum of numbers a and b subtracted from their product.

Answer:

(i) y - z

(ii)

(x+y)

-----

2

(iii) z²

(iv) pq

----

4

(v) x² + y²

(vi) 3mn + 5

(vii) 10 - yz

(viii) ab - ( a + b )

## Friday, 8 September 2017

### CBSE Class 7 - Maths - Chapter 2 - Decimals - Multiplication and Division (Worksheet) (#cbseNotes)

## Chapter 2 - Decimals - Multiplication and Division (Worksheet)

**Multiplying Decimals**

**Q1**. Multiply the decimals.

⑴ 4.4 ✕ 4.6

⑵ 9.06 ✕ 54

⑶ 4.23 ✕ 2.41

⑷ 8.13 ✕ 3.6

**Q2**. Solve:

⑴ ____ ✕ 53.99 = 539.9

⑵ 87.13 ✕ ____ = 87130

⑶ 10 ✕ _____ = 913

⑷ _____ ✕ 1000 = 85300

⑸ 88.233 ✕ 100 = _____

**Q3**. Convert to fractions and multiply.

⑴ 87.0 ✕ 5.2

⑵ 34.10 ✕ 70.20

## Monday, 4 September 2017

### CBSE Class 7 - Maths - Algebraic Expressions - Practice Sheet (#cbseNotes)

##
Class 7 - Maths - Algebraic Expressions

- Practice Sheet

**Q1. Classify as monomial, binomial and trinomial.**

(a) x - x² + x³

(b) -26ab

(c) -7p²q -7pq²

(d) -27a² -125b²

(e) 2978

**Q2. Form algebraic expressions from the following statements.**

(a) Sum of the terms 5x and (-9y)

(b) Sum of the squares of 4 and x

(c) Product of a and b added to the sum of y and 20.

(d) Two times number 9 is subtracted from the product of y and z.

## Tuesday, 23 May 2017

### CBSE Class 7 Maths - Data Handling - NCERT EXERCISE 3.4 (#cbsenotes)

## Data Handling

**Q1: Tell whether the following is certain to happen, impossible can happen but not certain.**

**(i) You are older today than yesterday.**

**(ii) A tossed coin will land heads up.**

**(iii) A die when tossed shall land up with 8 on top.**

**(iv) The next traffic light seen will be green.**

**(v) Tomorrow will be a cloudy day.**

Answer:

(i) It is certain to happen.

(ii) It can happen but not certain.

(iii)It is impossible.

(iv) It can happen but not certain.

(v) It can happen but not certain.

## Sunday, 7 May 2017

### CBSE Class 7 Maths - Integers - NCERT Exercise 1.3 (#cbsenotes)

## Integers

__EXERCISE 1.3__

*CBSE Class 7 Maths*

**Q1: Find each of the following products:**

(a) 3 × (–1)

(b) (–1) × 225

(c) (–21) × (–30)

(d) (–316) × (–1)

(e) (–15) × 0 × (–18)

(f) (–12) × (–11) × (10)

(g) 9 × (–3) × (– 6)

(h) (–18) × (–5) × (– 4)

(i) (–1) × (–2) × (–3) × 4

(j) (–3) × (–6) × (–2) × (–1)

Answer:

(a) 3 × (–1) = = –3

(b) (–1) × 225 = -225

(c) (–21) × (–30) = 630

(d) (–316) × (–1) = 316

(e) (–15) × 0 × (–18) = 0

(f) (–12) × (–11) × (10) = 132 × 10 = 1320

(g) 9 × (–3) × (– 6) = 9 × 18 = 162

(h) (–18) × (–5) × (– 4) = 90 × (–4) = –360

(i) (–1) × (–2) × (–3) × 4 = –6 × 4 = -24

(j) (–3) × (–6) × (–2) × (–1) = 18 × 2 = 36