Выполним вычисления по столбикам:
| \( 6 - 0 = 6 \) | \( 8 + 0 = 8 \) | \( 1 + 7 = 8 \) | \( 6 - 3 = 3 \) | \( 6 - 2 = 4 \) |
| \( 7 - 2 = 5 \) | \( 9 + 0 = 9 \) | \( 8 - 7 = 1 \) | \( 5 - 4 = 1 \) | \( 7 - 6 = 1 \) |
| \( 0 + 8 = 8 \) | \( 3 + 3 = 6 \) | \( 7 + 2 = 9 \) | \( 4 + 6 = 10 \) | \( 3 - 1 = 2 \) |
| \( 3 + 6 = 9 \) | \( 9 - 7 = 2 \) | \( 8 - 0 = 8 \) | \( 7 + 2 = 9 \) | \( 5 + 4 = 9 \) |
| \( 5 - 2 = 3 \) | \( 1 + 4 = 5 \) | \( 8 - 6 = 2 \) | \( 1 + 4 = 5 \) | \( 8 - 0 = 8 \) |
| \( 1 + 5 = 6 \) | \( 7 + 2 = 9 \) | \( 2 + 6 = 8 \) | \( 7 + 2 = 9 \) | \( 6 - 3 = 3 \) |
| \( 8 - 3 = 5 \) | \( 2 - 1 = 1 \) | \( 3 - 2 = 1 \) | \( 2 - 1 = 1 \) | \( 4 + 1 = 5 \) |
| \( 3 + 6 = 9 \) | \( 1 + 9 = 10 \) | \( 5 + 3 = 8 \) | \( 1 + 9 = 10 \) | \( 3 + 6 = 9 \) |
| \( 7 - 6 = 1 \) | \( 3 + 0 = 3 \) | \( 8 - 7 = 1 \) | \( 3 + 0 = 3 \) | \( 8 - 6 = 2 \) |
| \( 1 + 9 = 10 \) | \( 9 - 7 = 2 \) | \( 4 - 2 = 2 \) | \( 9 - 7 = 2 \) | \( 0 + 3 = 3 \) |
| \( 7 + 1 = 8 \) | \( 5 + 4 = 9 \) | \( 6 + 2 = 8 \) | \( 5 + 4 = 9 \) | \( 2 + 6 = 8 \) |
| \( 2 + 5 = 7 \) | \( 1 - 0 = 1 \) | \( 0 + 9 = 9 \) | \( 1 - 0 = 1 \) | \( 6 - 4 = 2 \) |
Во дворе играли 9 щенков.
3 щенка позвали домой.
Чтобы узнать, сколько щенков осталось, нужно из общего числа щенков вычесть тех, которых позвали домой:
\( 9 - 3 = 6 \) (щенков)
Ответ: 6 щенков.