Addition and Subtraction

Front

What is addition?

Back

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

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Front

What is the sum of 64 and 16?

Back

80

Front

What is the sum of 48 and 21?

Back

69

Front

What is the sum of 39 and 49?

Back

88

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value of the variable that makes the equation true.

Front

If Scarlett has 6 cats and Tania has 1 more, how many cats does Tania have?

Back

7 cats.

Front

What is the equation for Tania's cats?

Back

6 + 1 = 7

Front

What is a variable in math?

Back

A variable is a symbol used to represent an unknown number.