Understanding Related Facts and Fact Families

This video tutorial covers the concept of related facts and fact families in mathematics. It explains how related addition and subtraction sentences can be used to solve problems. The tutorial demonstrates using counters and models to visualize these concepts and identifies missing numbers in related facts. It also guides creating fact families and correcting mistakes in number sentences. The video concludes with a summary and introduces the next lesson on identifying related facts.

What is a fact family?

• A group of numbers that can be added in any order

• A set of related addition and subtraction sentences

• A collection of multiplication facts

• A series of unrelated numbers

How can counters help in understanding related facts?

• They help visualize addition and subtraction

• They are only used for subtraction

• They are used to divide numbers

• They show how to multiply numbers

In the example with gems, what numbers form a fact family?

• 5, 6, 7

• 3, 4, 8

• 2, 3, 5

• 4, 5, 9

What is the missing number in the related fact: 8 - 6 = ?

• 6

• 4

• 2

• 8

Which number is missing in the related fact: 9 + 4 = ?

• 14

• 11

• 12

• 13

What should be corrected in the sentence: 12 + 4 = 8?

• Change 12 to 8

• Change 8 to 16

• Change 4 to 12

• Change + to -

Which numbers form a fact family in the example: 7 + 4 = 11?

• 7, 4, 11

• 5, 6, 11

• 3, 4, 7

• 2, 3, 5

What is the correct subtraction sentence for the fact family: 2, 3, 5?

• Neither A nor B

• 5 - 2 = 3

• 5 - 3 = 2

• Both A and B

How many addition and subtraction sentences are in a complete set of related facts?

• Two addition and one subtraction

• Three addition and one subtraction

• Two addition and two subtraction

• One addition and one subtraction

What is the sum in the addition sentence: 2 + 3 = ?

• 4

• 5

• 6

• 7