Understanding Addition and Subtraction Equations

The video tutorial explains the concept of a Math Mountain, which is a fact family consisting of eight equations: four addition and four subtraction. The teacher demonstrates how to organize these equations by keeping the order of numbers consistent while changing their positions around the equal sign. The tutorial provides a step-by-step guide to forming these equations, emphasizing the importance of maintaining the order of numbers to create a coherent fact family.

What is a Math Mountain in the context of fact families?

• A tool for measuring height

• A type of mathematical operation

• A visual representation of a fact family

• A mountain used to teach geography

How many equations make up a fact family in a Math Mountain?

• Six

• Four

• Ten

• Eight

In the first addition equation, what is the total of 9 + 3?

• 11

• 12

• 14

• 13

What is the total in the first addition equation?

• 13

• 12

• 11

• 10

How is the first addition equation varied?

• By changing the operation

• By adding more numbers

• By changing the numbers

• By moving the solution to the front

What is the result of the second addition equation 3 + 9?

• 14

• 12

• 13

• 11

What is the partner number in the third addition equation?

• 5

• 4

• 6

• 3

How is the second addition equation varied?

• By changing the numbers

• By changing the operation

• By moving the solution to the front

• By adding more numbers

What is the solution in the fourth addition equation?

• 11

• 12

• 13

• 10

What is the first subtraction equation derived from the total 12?

• 12 - 3 = 9

• 12 - 4 = 8

• 12 - 5 = 7

• 12 - 6 = 6