Addition formula within 10

First,? Addition formula within 10

Good friends1919,2828 holding hands, 3737 really close, 4646 walking together, 550 making a pair of hands.

Eleven plus nine equals ten, two plus eight equals sixteen, three plus seven equals twenty-three, four plus six equals twenty-four and five plus five equals twenty-five.

Second,? Definition of addition

Addition is a basic mathematical operation, which refers to the process of combining two or more arrays into a sum.

Third,? The role of learning addition

Addition is an indispensable skill in daily life. Learning addition can cultivate children's logical thinking and problem-solving ability.