Understanding Order of Operations

The video tutorial explains how to evaluate and simplify a mathematical expression using the order of operations. It begins by identifying the operations involved and then proceeds to simplify the expression step-by-step, focusing on multiplication and subtraction. The tutorial also demonstrates how to verify the result using a graphing calculator, ensuring the expression simplifies to the correct value.

What operations are present in the given expression?

• Multiplication and division

• Addition and division

• Addition and subtraction

• Subtraction and multiplication

Tags

CCSS.7.EE.B.3

Why can the first two steps of the order of operations be skipped in this expression?

• There are no numbers in the expression

• There are no multiplication or division

• There are no addition or subtraction

• There are no parentheses or exponents

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of multiplying 15 by -3 in the expression?

• -45

• 15

• 45

• -15

Tags

CCSS.7.NS.A.1C

How does subtracting a negative number affect the expression?

• It is equivalent to adding a positive number

• It remains unchanged

• It becomes a smaller positive number

• It becomes a larger negative number

Tags

CCSS.7.NS.A.3

What is the final simplified value of the expression?

• 52

• 7

• 45

• -45

What tool is used to verify the simplified expression?

• A graphing calculator

• A scientific calculator

• A manual calculation

• A computer program

Tags

CCSS.6.EE.A.2C

What is the verified value of the expression using the calculator?

• 45

• 52

• 7

• -45

Tags

CCSS.6.EE.A.2C