Mind Maps

Q) Add the 43 + 54 =?

Q) There were 100 tens and 54 ones .how many tens are there?

Q) There were 54 tens and 76 ones .how many ones are there?

Q) Add the 7 + 7 = ?

Q) There were 12 tens and 0 ones .how many ones are there?

Q) 100 + 230 = 330, here 330 is known as ?

Q) 4 + 6 + 2 is equal to ?

Q) 48 + 35 + 12 = ?

Q) 189 + 10 + 1 = ?

Q) 24 + 11 + 53 = ?

Q) Adding the 34 + 76 +34 = ?

Q) A farmer has 34 cows , 56 horses and 34 goats.how many animals does he have in all?

Q) Adding the 54 +76 + 89 = ?

Q) There are 54 apples , 34 bananas and 54 oranges.how many fruits are there in all?

Q) There are 28 red flowers, 45 yellow flowers , and 43 blue flowers in 3 vases how many flowers are there in all?

Q) Add 6432 and 2567 ?

Q) Adding 1000 for 6209 ?

Q) Add mentally 300 + 100 + 6 + 4 = ?

Q) What is Regrouping of numbers give an example?

Q) There were 37 apples in one box and 54 red apples in another box how many apples were there in the two boxes?

Q) Ramu has 55 rupees in his piggy bank. Radha has 67 rupees in her piggy bank.How many rupees do they have together?

Q) What is sum give an Examples?

Q) What is addition give an example?

Q) Raja had 578 mangoes and his brother had 245 mangoes. Together how many mangoes did they have?

Q) A fruit seller has 44 apples and 27 bananas. How many fruits does he have in all?

Q) Ritu collected 38 stamps and her friend collected 29 stamps.How many stamps do they together?

Q) Chintu had 486 pencils and shyam had 147 pencils more than chintu. how many pencils did shyam have?

### Definition:

• The combination of two or more numbers to find the total is called addition.

Let us consider examples of addition using fruits and vegetables

1) 22 Watermelons + 13 Watermelons.

2) 56 Custard apples + 32 Custard apples.

3) 12 Tomatoes + 61 Tomatoes

4) 72 Potatoes + 18 Potatoes.

Then to the sum of the two numbers, we add the third number.

Example:
41 + 32 + 18
Solution:
The sum of 41 and 32 is,

Now, to the sum of 73, we add 18

So, the final answer is 91.

While doing addition, we put things together.
Plus " + " is the sign of addition. The numbers we add are called " addends " and the answer we get is called the " sum ".

When we add any 2-digits, we first add the ones and then the tens.

Look at the following addition problems.
1) Add 36 + 48 and 48 + 36.

We notice that the sum is the same in both the cases.

2) Add 72 + 14 and 14 + 72.

So, we can say that, even if we change the order of the addends, the sum remains the same.

## Regrouping Of Numbers

Regrouping is nothing but rearranging the numbers to make addition or subtraction easier to solve.
Example:
11 Balls or 11 ones is the same as 1 Ten + 1 one.
Similarly,
13 ones = 1 ten + 3 ones
15 ones = 1 ten + 5 ones.
In the same way, we can write,
• 3 tens + 14ones = 3 tens + 1 ten + 4 ones
• = 4 tens + 4 ones.
• 6 tens + 39 ones = 6 tens + 3 tens + 9 ones
• = 9 tens + 9 ones.

Let us consider few examples to understand addition with regrouping.
Example 1: Add 38 and 42.
Solution:
38 = 30 + 8 = 3 tens + 8 ones
42 = 40 + 2 = 4 tens + 2 ones
Let us write the numbers in columns to add

Now, we will consider the short way to solve the problem.
Example 2:

Solution:
8 ones + 4 ones = 12 ones = 1 ten + 2 ones
Write 2 in the ones column and take 1 to the tens column
4 tens + 2 tens + 1 ten (carried over) = 7 tens
Write 7 tens in the tens column

• Sum Of Three Addends With Regrouping

Let us consider an example.

• 32 + 48 + 19
• Solution:

Shortcut Method

In both the cases, Answer = 99.

2 + 8 + 9 = 19.
19 = 10 + 9 = 1 ten + 9 ones.
• Write 9 ones in the ones column and carry 1 ten to the tens column.