The video tutorial explores how different mathematical operations affect the size of numbers. It identifies multiplication and addition as operations that increase numbers, while division and subtraction decrease them. The tutorial then focuses on finding a rule using subtraction, demonstrating that subtracting nine from twelve results in three, suggesting a potential rule for solving similar problems.

What was the initial number mentioned in the problem?

• 10

• 12

• 15

• 20

Which operation is NOT mentioned as making numbers smaller?

• Addition

• Subtraction

• Multiplication

• Division

Which two operations are identified as making numbers larger?

• Division and Subtraction

• Multiplication and Addition

• Subtraction and Addition

• Multiplication and Division

What operations are considered when a number becomes smaller?

• Addition and Subtraction

• Multiplication and Division

• Division and Subtraction

• Multiplication and Addition

What is the first operation tried to find a rule?

• Multiplication

• Subtraction

• Division

• Addition

What number is subtracted from 12 to get 3?

• 6

• 9

• 8

• 7

What is the potential rule derived from the subtraction operation?

• Add 9 to all input values

• Subtract 9 from all input values

• Multiply all input values by 9

• Divide all input values by 9