Page 32 - Math Genius C5

E:\Working\Orange_Education\Math_Genius_5\Open_Files\CHAP_02
\\October 8, 2025 12:09 PM Bharat Arora P-9 Reader _________________________ Date: ___________________74

addition of largE nuMbErS

Addition of greater numbers is the same as that of smaller numbers. Let us add the amounts
of money `32,34,578 and `23,55,500 that were saved by the parents.

To add large numbers, follow the steps. C TL L tth th H T O
Step 1: Write the addends in columns according 1 1

to their place values. 3 2 3 4 5 7 8
Step 2: Start adding from the ones column, then + 2 3 5 5 5 0 0 Addend
move to the tens, and so on. Addend
Step 3: Use regrouping if required. 5 5 9 0 0 7 8

The total amount of money saved by the parents is `55,90,078.

example 1: Add the following.
( a) 7,93,648 and 3,57,364 (b) 29,36,436, 12,46,438 and 4,15,643

Solution: (a) TL L tth th H T O

Math Insight
1 1 1 1 1 1
7 9 3 6 4 8 The numbers that are
added are called addends
+ 3 5 7 3 6 4 and the answer is their sum.

1 1 5 1 0 1 2

(b) TL L tth th H T O

1 1 1 1 1 Think Tank Critical Thinking
2 9 3 6 4 3 6 What is the sum of the
1 2 4 6 4 3 8 greatest 8-digit number and

+ 4 1 5 6 4 3 smallest 8-digit number? How many
digits are there in the sum?
4 5 9 8 5 1 7

example 2: An NGO planted 4,12,250; 3,34,278; and 2,43,581 saplings across the country
on three successive years. How many saplings were planted in total during these three
years?

Solution: L tth th H T O

1 1 2
st
Number of saplings planted in the 1 year = 4 1 2 2 5 0
nd
Number of saplings planted in the 2 year = 3 3 4 2 7 8
rd
Number of saplings planted in the 3 year = + 2 4 3 5 8 1
Total saplings planted in all three years = 9 9 0 1 0 9

Thus, 9,90,109 saplings were planted in three years.

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