Trò chơi Ai nhanh hơn

Front

245 + 264 = ?

Back

509

Front

629 + 173 = ?

Back

802

Front

745 + 134 = ?

Back

879

Front

752 + 510 = ?

Back

1262

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is the sum of two numbers?

Back

The sum is the result of adding two or more numbers together.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length.

Front

What does it mean to add?

Back

To add means to combine quantities to get a larger quantity.

Front

What is the commutative property of addition?

Back

The commutative property states that changing the order of the numbers in an addition problem does not change the sum.

Front

What is the associative property of addition?

Back

The associative property states that when adding three or more numbers, the way in which the numbers are grouped does not change the sum.