📚 Big Friend Pairs (Complement to 10)
💡
Big Friends
are two numbers that add up to 10.
They help you add and subtract on the abacus when you need to carry to the tens rod!
| Number |
Big Friend |
Together |
| 1 |
9 |
1 + 9 = 10 |
| 2 |
8 |
2 + 8 = 10 |
| 3 |
7 |
3 + 7 = 10 |
| 4 |
6 |
4 + 6 = 10 |
| 5 |
5 |
5 + 5 = 10 |
✎ Find the Big Friend
What is the big friend of each number? (They must add up to 10)