Basic Addition and Subtraction Concepts

The video tutorial teaches how to find unknown addends in addition problems using subtraction. It introduces the concept of fact families, which are sets of numbers that form both addition and subtraction equations. The tutorial provides examples, such as using the total number of drinks to find the number of orange drinks by subtracting the known quantity of cherry drinks. It also includes practice problems where viewers find missing numbers in equations by applying subtraction. The video concludes with a summary and encouragement to apply the learned skills.

What is the primary method used to find unknown addends in an addition problem?

• Multiplication

• Addition

• Division

• Subtraction

What is a fact family?

• A group of numbers that can be added or subtracted to form equations

• A set of numbers used for multiplication

• A family of numbers that only add up to ten

• A group of numbers that are all even

In the example given, which numbers form the fact family?

• 3, 4, 5

• 1, 2, 3

• 2, 3, 5

• 1, 2, 4

How many addition statements can be formed from the fact family 1, 2, and 3?

• Three

• One

• Two

• Four

If there are 10 drinks in total and 7 are cherry, how many are orange?

• 5

• 4

• 3

• 2

What operation would you use to find the number of cherry drinks if you know the total and the number of orange drinks?

• Addition

• Multiplication

• Subtraction

• Division

What is the result of 10 minus 7?

• 1

• 2

• 4

• 3

What is the result of 10 minus 3?

• 8

• 7

• 6

• 5

In the equation 2 + ___ = 7, what is the missing number?

• 4

• 6

• 5

• 3

What is the missing number in the equation 3 + ___ = 4?

• 2

• 4

• 1

• 3