Penyelesaian - Long subtraction
46.81
Penjelasan langkah demi langkah
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 0 | ||||
| - | 2 | 3 | . | 1 | 9 |
| . |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| 7 | 0 | . | 0 | 0 | |
| - | 2 | 3 | . | 1 | 9 |
| . |
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 number to the left (70.0) which becomes (69.9) and get (10).
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 9 | 9 | 10 | ||
| 7 | 0 | . | 0 | 0 | |
| - | 2 | 3 | . | 1 | 9 |
| . |
Subtract the numbers in the hundredths column from the top number:
10-0-9=1
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 9 | 9 | 10 | ||
| 7 | 0 | . | 0 | 0 | |
| - | 2 | 3 | . | 1 | 9 |
| . | 1 |
Subtract the numbers in the tenths column from the top number:
9-1=8
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 9 | 9 | 10 | ||
| 7 | 0 | . | 0 | 0 | |
| - | 2 | 3 | . | 1 | 9 |
| . | 8 | 1 |
Subtract the numbers in the ones column from the top number:
9-3=6
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 9 | 9 | 10 | ||
| 7 | 0 | . | 0 | 0 | |
| - | 2 | 3 | . | 1 | 9 |
| 6 | . | 8 | 1 |
Subtract the numbers in the tens column from the top number:
6-2=4
| Place value | tens | ones | . | tenths | hundredths |
| 6 | 9 | 9 | 10 | ||
| 7 | 0 | . | 0 | 0 | |
| - | 2 | 3 | . | 1 | 9 |
| 4 | 6 | . | 8 | 1 |
The solution is: 46.81
Mengapa belajar ini
Learn more with Tiger
Why learn this