Solution - Long subtraction
7.222
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 3 | . | 3 | 4 | 5 | |
| - | 6 | . | 1 | 2 | 3 | |
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the thousandths column from the top number:
5-3=2
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 3 | . | 3 | 4 | 5 | |
| - | 6 | . | 1 | 2 | 3 | |
| . | 2 |
Subtract the numbers in the hundredths column from the top number:
4-2=2
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 3 | . | 3 | 4 | 5 | |
| - | 6 | . | 1 | 2 | 3 | |
| . | 2 | 2 |
Subtract the numbers in the tenths column from the top number:
3-1=2
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 1 | 3 | . | 3 | 4 | 5 | |
| - | 6 | . | 1 | 2 | 3 | |
| . | 2 | 2 | 2 |
Because the upper digit (3) in the ones column is too small to get a positive difference, borrow 1 from the digit (1) in the next number place which becomes (0) and get (13).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 13 | |||||
| 1 | 3 | . | 3 | 4 | 5 | |
| - | 6 | . | 1 | 2 | 3 | |
| . | 2 | 2 | 2 |
Subtract the numbers in the ones column from the top number:
13-6=7
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 13 | |||||
| 1 | 3 | . | 3 | 4 | 5 | |
| - | 6 | . | 1 | 2 | 3 | |
| 7 | . | 2 | 2 | 2 |
Write 0 in the tens place.
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 13 | |||||
| 1 | 3 | . | 3 | 4 | 5 | |
| - | 6 | . | 1 | 2 | 3 | |
| 0 | 7 | . | 2 | 2 | 2 |
The solution is: 7.222
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