Solution - Long subtraction
9126.78
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | |||||
| . |
Put zeros in the blank number places:
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| . |
2. Subtract the numbers using long subtraction method
Subtract the numbers in the hundredths column from the top number:
8-0=8
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| . | 8 |
Subtract the numbers in the tenths column from the top number:
7-0=7
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| . | 7 | 8 |
Because the upper digit (2) in the ones column is too small to get a positive difference, borrow 1 from the digit (5) in the next number place which becomes (4) and get (12).
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 4 | 12 | ||||||
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| . | 7 | 8 |
Subtract the numbers in the ones column from the top number:
12-6=6
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 4 | 12 | ||||||
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| 6 | . | 7 | 8 |
Subtract the numbers in the tens column from the top number:
4-2=2
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 4 | 12 | ||||||
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| 2 | 6 | . | 7 | 8 |
Write 1 in the hundreds place.
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 4 | 12 | ||||||
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| 1 | 2 | 6 | . | 7 | 8 |
Write 9 in the thousands place.
| Place value | thousands | hundreds | tens | ones | . | tenths | hundredths |
| 4 | 12 | ||||||
| 9 | 1 | 5 | 2 | . | 7 | 8 | |
| - | 2 | 6 | . | 0 | 0 | ||
| 9 | 1 | 2 | 6 | . | 7 | 8 |
The solution is: 9126.78
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