Mastering Multiplication and Division Fact Triangles

This video tutorial explains the concept of multiplication and division fact triangles. It introduces fact triangles as a tool to represent fact families, using the example of numbers 2, 9, and 18. The tutorial demonstrates how to use fact triangles to derive multiplication and division facts by covering one corner and using the other two numbers. It also provides a method for practicing these concepts to reinforce understanding.

What is the primary purpose of a fact triangle?

• To solve algebraic equations

• To represent fact families

• To memorize prime numbers

• To learn addition and subtraction

Tags

CCSS.1.OA.B.3

Which of the following sets of numbers is an example of a fact family?

• 4, 8, 12

• 5, 10, 15

• 3, 6, 9

• 2, 9, 18

Tags

CCSS.4.NBT.B.6

If you have the numbers 2, 9, and 18, which of the following is a correct multiplication fact?

• 9 * 18 = 2

• 2 * 18 = 9

• 9 * 2 = 18

• 18 * 2 = 9

Tags

CCSS.3.OA.C.7

Which of the following is a correct division fact for the numbers 2, 9, and 18?

• 18 / 9 = 18

• 2 / 18 = 9

• 18 / 2 = 9

• 9 / 18 = 2

Tags

CCSS.4.NBT.B.6

How can you use a fact triangle to quiz yourself?

• By solving for the largest number

• By memorizing the numbers

• By writing down all possible equations

• By covering one corner and using the other two numbers to find the hidden one

If you cover the number 18 in a fact triangle with the numbers 2, 9, and 18, what multiplication fact should you practice?

• 18 * 9

• 2 * 9

• 9 * 18

• 2 * 18

Tags

CCSS.3.OA.C.7