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Example 3: Find the sum of 7428 and 2387.

Solution: Arrange the numbers in the place value columns and add using the following
steps:
Step 1: Add the ones.

8 + 7 = 15 ones = 1 ten + 5 ones

Write 5 in the ones column and carry over 1 ten to the tens column.
Step 2: Add the tens. th H t O

1 (carried over) + 2 + 8 = 11 tens 1 1

= 1 hundred + 1 ten 7 4 2 8
Write 1 in tens column and carry over 1 hundred + 2 3 8 7

to the hundreds column. 9 8 1 5
Step 3: Add the hundreds.

1 (carried over) + 4 + 3 = 8 hundreds
Write 8 in the hundreds column.

Step 4: Add the thousands.

7 + 2 = 9 thousands
Write 9 in the thousands column.

Thus, the sum of 7428 and 2387 is 9815.

Think Tank Critical Thinking

There are six number cards given here. Put these cards in the two baskets
in a way so that the total value of the cards in both the baskets is the same. 2000
1000 1200
1: _______________ 2: __________________ 1500
800 500

Example 4: Find the sum of 6052, 2456 and 1201.
Solution: Arrange the numbers in the place value columns and follow the given steps:

Step 1: Add the ones. 2 + 6 + 1 = 9 ones

Step 2: Add the tens. 5 + 5 + 0 = 10 tens
= 1 hundred + 0 tens

Step 3: Add the hundreds.

1 (carried over) + 0 + 4 + 2 = 7 hundreds
Step 4: Add the thousands. 6 + 2 + 1 = 9 thousands

Thus, 6052 + 2456 + 1201 = 9709

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