# Class 1 Addition

Addition of 2-Digit and 1-Digit Numbers

## Basic Addition

Addition means keeping things together. For addition we put + sign, and it is known as ADD/PLUS sign.

**Example 1.** Add the below given red and blue balls.

**Solution.**We have 4 Blue balls and 3 red balls.

Total number of balls = 4 + 3 = 7 balls

So, we have total 7 blue and red balls

**Example 2.** Add the total number of White and green boxes.

**Solution.** We have 6 white boxes and 3 green boxes.

Total number of boxes = 6 + 3 = 9 boxes

So, we have total 9 white and green boxes.

## Addition Order

During the addition, if we change the order of numbers then the answer does not change.

Addition of 3 yellow balls and 4 green balls

Addition of 4 green balls and 3 yellow balls

## Adding Zeros

When we add zero to a number, the answer remains same.

## Adding One

When we add 1 to a number, the answer is the successor number.

## Addition of Three Numbers

John is having 3 smileys, Bob is having 5 smileys and Julie is having 2 smileys. How many total smileys they have with them?

So, in total they have 10 smileys with them.

## Addition of 2-Digit and 1-Digit Numbers

In this kind of addition, we must follow below mentioned rules.

1. Addition of once place

2. Addition of tens place

## Story Sum

In our day to day life we will come across with these simple additions.

**Example 1.** Ram has 5 chocolates and Sita has 4 chocolates. What is the total number of chocolates they both have?

**Solution.**

Number of chocolates Ram has = 5

Number of chocolate Sita has = 4

So, Ram and Sita both have 9 chocolates.

## Class-1 Addition Test

## Class-1 Addition Worksheet

## Answer Sheet

**Addition Sheet**Download the pdf

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