Solution - Long subtraction
1.125
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | |||||
| 1 | . | 5 | |||
| - | 0 | . | 3 | 7 | 5 |
| . |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | . | 0 | 0 | 0 | |
| 1 | . | 5 | 0 | 0 | |
| - | 0 | . | 3 | 7 | 5 |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the thousandths column is too small to get a positive difference, borrow 1 from the number to the left (3.00) which becomes (2.99) and get (10).
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 9 | 9 | 10 | ||
| 3 | . | 0 | 0 | 0 | |
| 1 | . | 5 | 0 | 0 | |
| - | 0 | . | 3 | 7 | 5 |
| . |
Subtract the numbers in the thousandths column from the top number:
10-0-0-5=5
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 9 | 9 | 10 | ||
| 3 | . | 0 | 0 | 0 | |
| 1 | . | 5 | 0 | 0 | |
| - | 0 | . | 3 | 7 | 5 |
| . | 5 |
Subtract the numbers in the hundredths column from the top number:
9-0-7=2
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 9 | 9 | 10 | ||
| 3 | . | 0 | 0 | 0 | |
| 1 | . | 5 | 0 | 0 | |
| - | 0 | . | 3 | 7 | 5 |
| . | 2 | 5 |
Subtract the numbers in the tenths column from the top number:
9-5-3=1
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 9 | 9 | 10 | ||
| 3 | . | 0 | 0 | 0 | |
| 1 | . | 5 | 0 | 0 | |
| - | 0 | . | 3 | 7 | 5 |
| . | 1 | 2 | 5 |
Subtract the numbers in the ones column from the top number:
2-1-0=1
| Place value | ones | . | tenths | hundredths | thousandths |
| 2 | 9 | 9 | 10 | ||
| 3 | . | 0 | 0 | 0 | |
| 1 | . | 5 | 0 | 0 | |
| - | 0 | . | 3 | 7 | 5 |
| 1 | . | 1 | 2 | 5 |
The solution is: 1.125
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