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Step 2. Subtract the tens. Step 3. Subtract the hundreds.

H T O H T O

5 14 5 14

3 6 4 3 6 4
– 1 4 8 – 1 4 8

1 6 2 1 6

5 – 4 = 1 ten 3 – 1 = 2 hundreds

So, 364 – 148 = 216.

regrouping Hundreds to tens

If there are not enough tens for subtraction,

we regroup 1 hundred to 10 tens.

H T O H T O

1 12
2 2 0 2 2 0
2 hundreds 2 tens 1 hundred 12 tens

Example 3. Subtract 173 from 239.

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

H T O H T O

2 3 9 1 13

– 1 7 3 2 3 9

6 – 1 7 3

6 6

9 – 3 = 6 ones 7 tens cannot be subtracted from 3 tens.

So, regroup hundreds and tens.
2 hundreds 3 tens = 1 hundred 13 tens

Now, 13 – 7 = 6 tens.

58 Mathematics 3