Page 39 - Revised Maths Wisdom Class - 3

Additi on of 4-Digit Numbers 37

Step 2: Add the tens. Th H T O

1 ten (carried over) + 6 tens + 8 tens 1 1
5 2 6 8
= 15 tens = 10 tens + 5 tens = 1 hundred + 5 tens + 2 7 8 5

Write 5 under tens column and carry 1 hundred 5 3
to hundreds column.

Step 3: Add the hundreds. Th H T O

1 hundred (carried over) + 2 hundreds + 7 hundreds 1 1 1

= 10 hundreds = 1 thousand + 0 hundreds. + 5 2 6 8
2
7
5
8
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Write 0 under hundreds column and carry 1 thousand 0 5 3
to thousands column.
Step 4: Add the thousands.
Th H T O
1 thousand (carried over) + 5 thousands + 2 thousands 1 1 1
= 8 thousands 5 2 6 8

Write 8 under thousands column. + 2 7 8 5
8 0 5 3
Hence, the sum is 8053.

Example 2: Find the sum: 5632 + 1048 + 3214

Solution: By arranging the numbers in columns and then adding, we get:

Th H T O

1
5 6 3 2
1 0 4 8
+ 3 2 1 4

9 8 9 4 Hence, the sum is 9894.

Example 3: Find the sum: 3847 + 789 + 1562

Solution: By arranging the numbers in columns and then adding, we get:

Th H T O

2 1 1
3 8 4 7

7 8 9
+ 1 5 6 2
6 1 9 8 Hence, the sum is 6198.