Subtraction with borrowing
The question
40 − 14
310 40 14 26
- 40 − 14, written in columns. Start at the RIGHT, with the ones.
- 0 is too small to take 4 from, so a ten comes across from the left: the ones now holds 10. 10 − 4 = 6.
- This column gave a ten to the right, so it is now 3, not 4. 3 − 1 = 2.
- That is the whole sum: 40 − 14 = 26.
How it works.
- 01
40 − 14, written in columns. Start at the RIGHT, with the ones.
- 02
0 is too small to take 4 from, so a ten comes across from the left: the ones now holds 10. 10 − 4 = 6.
- 03
This column gave a ten to the right, so it is now 3, not 4. 3 − 1 = 2.
- 04
That is the whole sum: 40 − 14 = 26.