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Row 1 will be a ★ entry for 5
Row 2 will be a ★ entry for 5
Row 3 will be a ★ entry for 5
★ | ★ | ★ | ★ | ★ |
★ | ★ | ★ | ★ | ★ |
★ | ★ | ★ | ★ | ★ |
★★★★★ + ★★★★★ + ★★★★★ = 15
Add the following 3 numbers:
5 + 5 + 5
5 | |
5 | |
+ | 5 |
5 |
Column 2 → 5 + 5 + 5 = 15
Since 15 is greater than 9, we take the digit farthest to the right of our answer which is 5
We also carry the digit farthest to the left which is 1 for Column 1
1 | |
5 | |
5 | |
+ | 5 |
1 | 5 |
We carry a value of 1 from the last step
Column 1 → Bring down the 1 from Column 1 and we are finished