Solution - Long subtraction
2.934
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | |||||
| - | 1 | . | 0 | 6 | 6 |
| . |
Put zeros in the blank number places:
| Place value | ones | . | tenths | hundredths | thousandths |
| 4 | . | 0 | 0 | 0 | |
| - | 1 | . | 0 | 6 | 6 |
| . |
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 (4.00) which becomes (3.99) and get (10).
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 9 | 9 | 10 | ||
| 4 | . | 0 | 0 | 0 | |
| - | 1 | . | 0 | 6 | 6 |
| . |
Subtract the numbers in the thousandths column from the top number:
10-0-6=4
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 9 | 9 | 10 | ||
| 4 | . | 0 | 0 | 0 | |
| - | 1 | . | 0 | 6 | 6 |
| . | 4 |
Subtract the numbers in the hundredths column from the top number:
9-6=3
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 9 | 9 | 10 | ||
| 4 | . | 0 | 0 | 0 | |
| - | 1 | . | 0 | 6 | 6 |
| . | 3 | 4 |
Subtract the numbers in the tenths column from the top number:
9-0=9
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 9 | 9 | 10 | ||
| 4 | . | 0 | 0 | 0 | |
| - | 1 | . | 0 | 6 | 6 |
| . | 9 | 3 | 4 |
Subtract the numbers in the ones column from the top number:
3-1=2
| Place value | ones | . | tenths | hundredths | thousandths |
| 3 | 9 | 9 | 10 | ||
| 4 | . | 0 | 0 | 0 | |
| - | 1 | . | 0 | 6 | 6 |
| 2 | . | 9 | 3 | 4 |
The solution is: 2.934
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