Solution - Long subtraction
120.138
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| . |
2. Subtract the numbers using long subtraction method
Because the upper digit (5) in the thousandths column is too small to get a positive difference, borrow 1 from the number to the left (80) which becomes (79) and get (15).
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 7 | 9 | 15 | |||||
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| . |
Subtract the numbers in the thousandths column from the top number:
15-7=8
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 7 | 9 | 15 | |||||
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| . | 8 |
Subtract the numbers in the hundredths column from the top number:
9-6=3
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 7 | 9 | 15 | |||||
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| . | 3 | 8 |
Subtract the numbers in the tenths column from the top number:
7-6=1
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 7 | 9 | 15 | |||||
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| . | 1 | 3 | 8 |
Subtract the numbers in the ones column from the top number:
6-6=0
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 7 | 9 | 15 | |||||
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| 0 | . | 1 | 3 | 8 |
Subtract the numbers in the tens column from the top number:
5-3=2
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 7 | 9 | 15 | |||||
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| 2 | 0 | . | 1 | 3 | 8 |
Subtract the numbers in the hundreds column from the top number:
2-1=1
| Place value | hundreds | tens | ones | . | tenths | hundredths | thousandths |
| 7 | 9 | 15 | |||||
| 2 | 5 | 6 | . | 8 | 0 | 5 | |
| - | 1 | 3 | 6 | . | 6 | 6 | 7 |
| 1 | 2 | 0 | . | 1 | 3 | 8 |
The solution is: 120.138
How did we do?
Please leave us feedback.Why learn this
Why learn this