Solution - Long subtraction
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
Place value | tens | ones | . | tenths | hundredths |
6 | 2 | . | 9 | ||
- | 4 | 8 | . | 0 | 5 |
. |
Put zeros in the blank number places:
Place value | tens | ones | . | tenths | hundredths |
6 | 2 | . | 9 | 0 | |
- | 4 | 8 | . | 0 | 5 |
. |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the hundredths column is too small to get a positive difference, borrow 1 from the digit (9) in the next number place which becomes (8) and get (10).
Place value | tens | ones | . | tenths | hundredths |
8 | 10 | ||||
6 | 2 | . | 9 | 0 | |
- | 4 | 8 | . | 0 | 5 |
. |
Subtract the numbers in the hundredths column from the top number:
10-0-5=5
Place value | tens | ones | . | tenths | hundredths |
8 | 10 | ||||
6 | 2 | . | 9 | 0 | |
- | 4 | 8 | . | 0 | 5 |
. | 5 |
Subtract the numbers in the tenths column from the top number:
8-0=8
Place value | tens | ones | . | tenths | hundredths |
8 | 10 | ||||
6 | 2 | . | 9 | 0 | |
- | 4 | 8 | . | 0 | 5 |
. | 8 | 5 |
Because the upper digit (2) in the ones column is too small to get a positive difference, borrow 1 from the digit (6) in the next number place which becomes (5) and get (12).
Place value | tens | ones | . | tenths | hundredths |
5 | 12 | ||||
8 | 10 | ||||
6 | 2 | . | 9 | 0 | |
- | 4 | 8 | . | 0 | 5 |
. | 8 | 5 |
Subtract the numbers in the ones column from the top number:
12-8=4
Place value | tens | ones | . | tenths | hundredths |
5 | 12 | ||||
8 | 10 | ||||
6 | 2 | . | 9 | 0 | |
- | 4 | 8 | . | 0 | 5 |
4 | . | 8 | 5 |
Subtract the numbers in the tens column from the top number:
5-4=1
Place value | tens | ones | . | tenths | hundredths |
5 | 12 | ||||
8 | 10 | ||||
6 | 2 | . | 9 | 0 | |
- | 4 | 8 | . | 0 | 5 |
1 | 4 | . | 8 | 5 |
The solution is: 14.85
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