Each number from 11 to 20 is one ten plus some ones.

Each number from 11 to 20 is one ten plus some ones.

The number 13 is one ten and three ones. That is why it is written with a 1 and a 3 next to each other.

🔢 Tất cả điều thú vị về Số 11–20 →

Thêm điều thú vị về Số 11–20