Page 37 - Math Genius C4

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\\September 30, 2025 9:38 AM Bharat Arora P-9 Reader _________________________ Date: ___________________74

Step 7: Write 1 lakh in the lakhs column. L tth th H T O

1 1 1 1 1
4 7 8 4 4
Thus, 47,844 + 54,667 = 1,02,511. + 5 4 6 6 7

1 0 2 5 1 1
example 5: Add 8,71,999 and 19,999.

Solution: L tth th H T O Think Tank Critical Thinking

Find the sum of:
1 1 1 1 1. 4 thousands + 3 hundreds + 12 tens
8 7 1 9 9 9 + 2 ones
+ 1 9 9 9 9 2. 6 ten thousands + 2 thousands + 55
hundreds
8 9 1 9 9 8 3. 8 thousands + 13 hundreds + 11 ones

9 ones + 9 ones = 18 ones
= 1 ten and 8 ones
1 ten (Carried over) + 9 tens + 9 tens = 19 tens
= 1 hundred and 9 tens
1 hundred (Carried over) + 9 hundreds + 9 hundreds = 19 hundreds
= 1 thousand and 9 hundreds

1 thousand (Carried over) + 1 thousand + 9 thousands = 11 thousands
= 1 ten thousand and 1 thousand
1 ten thousand (Carried over) + 7 ten thousands + 1 ten thousand
= 9 ten thousands
8 lakhs + 0 lakhs = 8 lakhs
Thus, the required sum is 8,91,998.

Practice time 2a

1. Add the following.

(a) tth th H T O (b) L tth th H T O

7 1 2 5 3 2 5 9 2 1 2

+ 2 3 4 0 1 + 1 2 0 1 2 7

(c) L tth th H T O (d) L tth th H T O

7 5 6 2 0 0 7 1 2 6 2 5
1 0 0 1 6 8 + 2 2 1 5 3 6
+ 1 3 3 2 1

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