KidSafe Play
Quản lý con 👶
Ngôn ngữ
EN VI
Đăng nhập
Doubles are a magic trick — 5 plus 5 always makes 10!

Doubles are a magic trick — 5 plus 5 always makes 10!

When you add two numbers that are the same, it is called a double. Learning doubles like 5 + 5 helps you add super fast.

➕ Tất cả điều thú vị về Phép cộng cơ bản →

Thêm điều thú vị về Phép cộng cơ bản

Adding means putting groups together to make a bigger number. Adding means putting groups together to make a bigger number. The plus sign (+) tells you to put numbers together. The plus sign (+) tells you to put numbers together. When you add zero to a number, the number stays the same. When you add zero to a number, the number stays the same. You can add numbers in any order and get the same answer. You can add numbers in any order and get the same answer. Adding 1 to a number gives you the very next counting number. Adding 1 to a number gives you the very next counting number.