# What is the first chapter of maths class 7?

Contents

## What is the first chapter of maths class 7?

NCERT Solutions for Class 7 Maths Chapter 1 Integers.

## What is integer in maths for Class 7?

Integers are the set of positive and negative numbers and zero. Even whole numbers are integers. Usually for better understanding integers are represented in a number line. Negative numbers will be on the left side of the number line, and positive numbers will be on the right side of the number line.

## What is the temperature difference between the hottest and the coldest place among the above answer?

(b) What is the temperature difference between the hottest and the coldest places among the above? Temperature difference = (22o C) ‒ (‒ 8o C) = 30o C.

## What is a rational number Class 7?

A rational number is a number that can be expressed as a ratio of p/q, where p and q are integers, and q does not equal to zero. The numerator and the denominator of a rational number will be integers. This means that 0 can also be a rational number as a rational number can be represented as 0/5 or 0/100 etc.

## Is zero a whole number?

The whole numbers are the numbers 0, 1, 2, 3, 4, and so on (the natural numbers and zero). Negative numbers are not considered “whole numbers.” All natural numbers are whole numbers, but not all whole numbers are natural numbers since zero is a whole number but not a natural number.

## What is 7th water cycle?

Water of Class 7 The water from the oceans and surface of the earth evaporates and rises up in the air. It cools and condenses to form clouds and then falls back to the earth as rain, snow or hail. This circulation of water between the oceans and land is called water cycle.

## How can I learn math in class 7?

Learn Class 7 Maths in a Simpler way!

1. Chapter 1 – Integers. …
2. Chapter 2 – Fractions and Decimals. …
3. Chapter 3 – Data Handling. …
4. Chapter 4 – Simple Equations. …
5. Chapter 5 – Lines and Angles. …
6. Chapter 6 – The Triangle and Its Properties. …
7. Chapter 7 – Congruence of Triangles. …
8. Chapter 8 – Comparing Quantities.

## Can integers be decimals?

Key idea: Like whole numbers, integers don’t include fractions or decimals.

## Is 9 a whole number?

Thus, the whole numbers list includes 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, …. Facts: All the natural numbers are whole numbers.

## What is the opposite of 326 BC?

the opposite of 326 BC is 326 AD. B.C. stands for “before Christ,” meaning before Jesus was born.

## What is the temperature difference between Bengaluru and Srinagar?

Question 1: Following number line shows the temperature in degree celsius (°C) at different places on a particular day….Answer:

Place Temperature (°C)
Srinagar -2
Shimla 5
Ooty 14
Bengaluru 22

## Can we say temperature of Srinagar and Shimla?

(d) Can we say temperature of Srinagar and Shimla taken together is less than the temperature at Shimla? Is it also less than the temperature at Srinagar? Thus, temperature of Srinagar and Shimla taken together is less than the temperature at Shimla. No, it is not less than the temperature at Srinagar.

## Is zero a rational number?

Answer: Yes, 0 is a rational number because it has a non-zero denominator. Since the number 0 can also be written as 0/1.

## What is closure property?

Closure property holds for addition and multiplication of whole numbers. Closure property of whole numbers under addition: The sum of any two whole numbers will always be a whole number, i.e. if a and b are any two whole numbers, a + b will be a whole number. Example: 12 + 0 = 12. 9 + 7 = 16.

## What is this whole number?

A whole number is simply any positive number that does not include a fractional or decimal part. This means that, for example, the numbers 0, 1, 2, 3, 4, 5, 6, and 7 are all whole numbers. Numbers such as -3, 2.7, or 3 ½ are not whole numbers.

## Is Pi a real number?

Pi is a number that relates a circle’s circumference to its diameter. Pi is an irrational number, which means that it is a real number that cannot be expressed by a simple fraction. That’s because pi is what mathematicians call an “infinite decimal” — after the decimal point, the digits go on forever and ever.

## Who invented zero?

About 773 AD the mathematician Mohammed ibn-Musa al-Khowarizmi was the first to work on equations that were equal to zero (now known as algebra), though he called it ‘sifr’. By the ninth century the zero was part of the Arabic numeral system in a similar shape to the present day oval we now use.

## What is the smallest number?

The smallest whole number is “0” (ZERO).