Solution - Long subtraction
50.4
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
Place value | tens | ones | . | tenths |
5 | 3 | |||
1 | . | 8 | ||
- | 0 | . | 8 | |
. |
Put zeros in the blank number places:
Place value | tens | ones | . | tenths |
5 | 3 | . | 0 | |
1 | . | 8 | ||
- | 0 | . | 8 | |
. |
2. Subtract the numbers using long subtraction method
Because the upper digit (0) in the tenths column is too small to get a positive difference, borrow 2 from the digit (3) in the next number place which becomes (1) and get (20).
Place value | tens | ones | . | tenths |
1 | 20 | |||
5 | 3 | . | 0 | |
1 | . | 8 | ||
- | 0 | . | 8 | |
. |
Subtract the numbers in the tenths column from the top number:
20-0-8-8=4
Place value | tens | ones | . | tenths |
1 | 20 | |||
5 | 3 | . | 0 | |
1 | . | 8 | ||
- | 0 | . | 8 | |
. | 4 |
Subtract the numbers in the ones column from the top number:
1-1-0=0
Place value | tens | ones | . | tenths |
1 | 20 | |||
5 | 3 | . | 0 | |
1 | . | 8 | ||
- | 0 | . | 8 | |
0 | . | 4 |
Write 5 in the tens place.
Place value | tens | ones | . | tenths |
1 | 20 | |||
5 | 3 | . | 0 | |
1 | . | 8 | ||
- | 0 | . | 8 | |
5 | 0 | . | 4 |
The solution is: 50.4
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