Understanding Fact Families in Mathematics

The video tutorial introduces the concept of fact families, explaining how three numbers can form a family through addition and subtraction. The instructor demonstrates this with three example problems, showing how to verify if numbers form a fact family and how to arrange them in a 'house' to visualize their relationships. The lesson emphasizes the importance of checking calculations to ensure they make sense. The video concludes with a call to action to like and subscribe.

What is a fact family?

• A group of numbers that can be added and subtracted in different ways

• A set of numbers that are always even

• A group of numbers that are all multiples of ten

• A collection of numbers that are all prime

Which of the following is a correct addition equation for the fact family 9, 13, and 22?

• 9 + 13 = 21

• 13 + 9 = 22

• 22 + 9 = 13

• 9 + 22 = 13

What is the correct subtraction equation for the fact family 9, 13, and 22?

• 22 - 13 = 9

• 9 - 13 = 22

• 13 - 9 = 22

• 22 - 9 = 13

Which equation does not belong to the fact family 17, 8, and 25?

• 25 - 8 = 17

• 8 + 17 = 25

• 17 - 9 = 8

• 17 + 8 = 25

What is the largest number in the fact family 17, 8, and 25?

• 25

• 8

• 17

• 9

Which of the following is a correct addition equation for the fact family 15, 9, and 24?

• 15 + 9 = 24

• 9 + 15 = 23

• 24 + 9 = 15

• 15 + 24 = 9

What is the correct subtraction equation for the fact family 15, 9, and 24?

• 9 - 15 = 24

• 15 - 9 = 24

• 24 - 9 = 15

• 24 - 15 = 9

Which number is not part of the fact family 15, 9, and 24?

• 15

• 9

• 24

• 6

How many different equations can be formed in a fact family?

• Four

• Three

• Five

• Two

What should you do if an equation doesn't make sense in a fact family?

• Change the numbers

• Ignore it

• Check your calculations

• Add more numbers