Understanding Equations with Parentheses and Operations

The video tutorial explains how to make equations true using parentheses and basic operations like addition, subtraction, multiplication, and division. It emphasizes the importance of the order of operations. The instructor demonstrates forming the equation 81 - 1 = 80 by using 9 times 9 and 9 divided by 9, and forming 81 + 0 = 81 using similar methods. The video concludes by challenging viewers to solve additional equations on their own.

What is the primary goal when using parentheses and operations in equations?

• To simplify equations to zero

• To make equations more complex

• To make equations true

• To eliminate the need for operations

Tags

CCSS.3.OA.A.3

How can you form the number 81 using the number 9?

• By dividing 9 by 9

• By subtracting 9 from 9

• By multiplying 9 by 9

• By adding 9 and 9

Tags

CCSS.4.NBT.B.6

Which operation is used to form the number 1 in the equation 81 minus 1?

• Multiplication

• Subtraction

• Addition

• Division

Tags

CCSS.2.NBT.B.5

In the equation 81 plus 0, how is the number 0 formed?

• By adding 9 and 9

• By subtracting 9 from 9

• By multiplying 9 by 9

• By dividing 9 by 9

Tags

CCSS.1.OA.B.3

What is the result of adding the quantities 81 and 0?

• 82

• 81

• 80

• 79

Tags

CCSS.1.OA.B.3