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Step 1. Subtract Step 2. Subtract Step 3. Subtract Step 4. Subtract
the ones. the tens. the hundreds. the thousands.

Th H T O Th H T O Th H T O Th H T O
3 15 13 13 13
9 8 4 5 7 3 15 7 3 15 7 3 15

– 3 6 8 9 9 8 4 5 9 8 4 5 9 8 4 5
6 – 3 6 8 9 – 3 6 8 9 – 3 6 8 9

5 6 1 5 6 6 1 5 6

Therefore, 9845 – 3689 = 6156.

Subtracting 5-digit Numbers

Example 2. Subtract 29764 from 75362. Example 3. Find the difference of

75134 and 31136.

Solution. TTh Th H T O Solution. TTh Th H T O

14 12 15 10 12
6 4 2 5 12 4 0 2 14
7 5 3 6 2 7 5 1 3 4
– 2 9 7 6 4 – 3 1 1 3 6

4 5 5 9 8 4 3 9 9 8

Subtraction of Numbers with Zeros

Example 4. Find the difference of:
a. 8496 and 90000 b. 12365 and 80000 c. 45010 and 1769

Solution. a. TTh Th H T O b. TTh Th H T O c. TTh Th H T O
9 9 9 9 9 9 9 10

8 10 10 10 10 7 10 10 10 10 4 10 0 10
9 0 0 0 0 8 0 0 0 0 4 5 0 1 0
– 8 4 9 6 – 1 2 3 6 5 – 1 7 6 9

8 1 5 0 4 6 7 6 3 5 4 3 2 4 1

Checking Subtraction

We can check subtraction by adding the difference to the subtrahend. If the sum
of the difference and the subtrahend is equal to the minuend, the subtraction is
correct.

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Addition and Subtraction