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Step 3. Now, subtract the hundreds.

7 – 2 = 5 hundreds
Get it right!
H t O
8 13 H T O H T O
7 15
7 9 3 4 8 5 4 8 5
– 2 4 6 – 2 1 9 – 2 1 9

5 4 7 2 7 4 7 2 6 6 3

Thus, 793 – 246 = 547.
regrouping hundreds

We know that 1 hundred = 10 tens.

So, we borrow 1 hundred from the hundreds place when there are not enough tens
to subtract from in the tens place.

Let us understand this with an example.
Example 2: Find: 428 – 182.
Solution:

Step 1. Subtract the ones. Step 2. Subtract the tens.

8 – 2 = 6 ones H t O

H t O 3 12
4 2 8

4 2 8 – 1 8 2
– 1 8 2 4 6

6 Since 2 < 8, regroup.
4 hundreds + 2 tens
= 3 hundreds + 12 tens

12 – 8 = 4 tens
Step 3. Subtract the hundreds.

3 – 1 = 2 hundreds Think Tank Critical Thinking
Put the least digit in the blanks so that
H t O you need to regroup and subtract.
3 12 1. Tens into ones 2. Hundreds into tens

4 2 8 H T O H T O
– 1 8 2 7 5 6 4 2 8
2 4 6 – 5 2 – 2 5

Thus, 428 – 182 = 246.

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