2nd grade- Math- Subtraction and Addition

Front

What is subtraction?

Back

Subtraction is the mathematical operation of finding the difference between two numbers, where one number is taken away from another.

Front

What is addition?

Back

Addition is the mathematical operation of combining two or more numbers to get a total or sum.

Front

What is the result of 67 - 19?

Back

The result is 48.

Front

What is the result of 41 - 5?

Back

The result is 36.

Front

What is the result of 4 + 4?

Back

The result is 8.

Front

What is the result of 41 + 14?

Back

The result is 55.

Front

What is the result of 15 - 13?

Back

The result is 2.

Front

What is a number line?

Back

A number line is a straight line with numbers placed at equal intervals along its length, used to represent numbers and perform operations like addition and subtraction.

Front

What is the commutative property of addition?

Back

The commutative property of addition states that changing the order of the addends does not change the sum. For example, 3 + 5 = 5 + 3.

Front

What is the associative property of addition?

Back

The associative property of addition states that the way in which numbers are grouped does not change the sum. For example, (2 + 3) + 4 = 2 + (3 + 4).