➕ Phép cộng cơ bản
7 điều thú vị về Phép cộng cơ bản. Chạm vào một điều để đọc thêm.
Adding means putting groups together to make a bigger number.
The plus sign (+) tells you to put numbers together.
When you add zero to a number, the number stays the same.
You can add numbers in any order and get the same answer.
Adding 1 to a number gives you the very next counting number.
Doubles are a magic trick — 5 plus 5 always makes 10!
Add every number from 1 to 10 and you get exactly 55.