Addition – Definition, Symbol, Properties and Examples

Approaches to Addition

There are different methods and properties associated with addition that help in performing calculations efficiently. There are various methods that we can use to solve problems on addition. The following are some methods: 

• Using Addition Tables
• Using Number Line
• Using Fingers/ Figures
• Regrouping

Now let’s learn to add using each of these methods.

Using Addition Table in Addition 

Addition table gives us the sum of the first 10 natural numbers.  It is a useful tool which can come handy when we have to add numbers less than or upto 10.

Using Number Line in Addition 

We can also solve additon problems with the help of number line. Let’s add 2  and 4  using a number line.

For adding 2 and 4 using number line , we first begin with 2 and then we move 4 steps towards the right, as shown in the figure below, which gives us 6.

Using Figures/ Fingers in Addition 

We can add any two numbers by using fingers and figures as well. As we can see, in the figure below there are 3 blue pens and 2 red pens, we can count the numbers of pens, and get the sum of 5 pens in total.

Regrouping in Addition 

In order add numbers with two or more digits, we use the regoruping method in addition. In this method, we create the groups of ones, tens and hundred. Let’s see how we group numbers and add.

We will first write one number below the other as per their place value.

Under this method, we begin from the right, so we will add 6 and 4, the sum will be 10. Since we group ones and tens, we will put 0 in the ones column and give 1 as carryover to the tens column

We then add the numbers in the tens column along with the carry over digit to find the answer. We will add 6 and 3 along with 1, which gives us 10.

Hence, the sum of 66 + 34 is 100.