Building Fact Families with Addition and Subtraction

The video introduces the concept of number families and fact families, explaining how three numbers can form two addition and two subtraction sentences. It demonstrates using a house diagram to visualize these relationships. The video includes examples and a game to reinforce understanding, showing how to solve problems by identifying missing numbers in a fact family. The lesson concludes with a recap of the key concepts and encourages students to apply their knowledge in a game.

What is the result of adding 2 and 3 in the context of a number family?

• 4

• 5

• 6

• 7

In a fact family, what is the largest number's position in the house diagram?

• In the middle

• Outside the house

• At the top

• At the bottom

How many addition and subtraction sentences can be formed in a fact family?

• Four addition and four subtraction

• Three addition and three subtraction

• One addition and one subtraction

• Two addition and two subtraction

What is the purpose of using a house diagram in understanding fact families?

• To visualize the largest number

• To create more complex equations

• To solve multiplication problems

• To organize numbers

If you know two numbers in a fact family are 7 and 4, what is the missing number?

• 6

• 2

• 3

• 5

In the game with Sue, if she has 10 crayons and 6 are visible, how many are hidden?

• 5

• 4

• 3

• 2

What is the benefit of knowing one fact in a fact family?

• You can determine the other three facts

• You can ignore the other numbers

• You can solve unrelated problems

• You can guess the other numbers