คำตอบ - Long subtraction
50.976
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 1 | . | 6 | |||
| - | 0 | . | 6 | 2 | 4 | |
| . |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| . |
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 (60) which becomes (59) and get (10).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 9 | 10 | ||||
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| . |
Subtract the numbers in the thousandths column from the top number:
10-0-4=6
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 9 | 10 | ||||
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| . | 6 |
Subtract the numbers in the hundredths column from the top number:
9-2=7
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 5 | 9 | 10 | ||||
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| . | 7 | 6 |
Because the upper digit (5) in the tenths 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 (15).
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 15 | |||||
| 5 | 9 | 10 | ||||
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| . | 7 | 6 |
Subtract the numbers in the tenths column from the top number:
15-6=9
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 15 | |||||
| 5 | 9 | 10 | ||||
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| . | 9 | 7 | 6 |
Subtract the numbers in the ones column from the top number:
0-0=0
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 15 | |||||
| 5 | 9 | 10 | ||||
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| 0 | . | 9 | 7 | 6 |
Write 5 in the tens place.
| Place value | tens | ones | . | tenths | hundredths | thousandths |
| 0 | 15 | |||||
| 5 | 9 | 10 | ||||
| 5 | 1 | . | 6 | 0 | 0 | |
| - | 0 | . | 6 | 2 | 4 | |
| 5 | 0 | . | 9 | 7 | 6 |
The solution is: 50.976
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