Adding and Subtracting within 1000

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 does it mean to solve an equation?

Back

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

Front

If you have 12 apples and you add 5 more, how many apples do you have?

Back

12 + 5 = 17 apples.

Front

If you have 30 candies and you give away 10, how many candies do you have left?

Back

30 - 10 = 20 candies.

Front

What is the missing number in the equation 15 + __ = 30?

Back

The missing number is 15.

Front

What is the sum of 25 and 30?

Back

25 + 30 = 55.

Front

If there are 50 students in a class and 20 go home, how many students are left?

Back

50 - 20 = 30 students.

Front

What is the total of 11, 25, and 13?

Back

11 + 25 + 13 = 49.

Front

If you have 100 and you spend 45, how much do you have left?

Back

100 - 45 = 55.