Mastering Order of Operations with Rational Numbers

This video tutorial covers the last official notes of Unit 2.5, focusing on the order of operations using the acronym PEMDAS. It explains how to simplify expressions, work with exponents, and perform multiplication, division, addition, and subtraction. The tutorial includes examples and practice problems, culminating in a word problem to apply the learned concepts in a real-world context.

What is the first step in the order of operations according to PEMDAS?

• Exponents

• Parentheses

• Addition

• Multiplication

If you have an expression 3^2, what is the result?

• 12

• 9

• 6

• 5

In the expression 5 * 4 - 6 * (8 - 7) + 5^2, what do you calculate first?

• 5^2

• 8 - 7

• 5 * 4

• 6 * 1

What is the result of the expression 2 + 4 + 12 + 12 divided by 6?

• 8

• 6

• 5

• 7

How do you solve the fraction division 7/5 divided by 1/12?

• Multiply 7/5 by 1/12

• Divide 7 by 5 and then by 12

• Multiply 7/5 by 12/1

• None of the above

What is the correct sequence of operations for the expression 1 + 1 divided by -2 + (-2 - 1)?

• Subtraction, Division, Addition

• None of the above

• Division, Addition, Subtraction

• Addition, Division, Subtraction

Jordan earns $7.75 per hour and works for 6 hours. How much does he earn before expenses?

• $47.50

• $49.50

• $45.50

• $46.50

What is the result of the expression -3 squared?

• 9

• -9

• -6

• 6

After working and spending on games and gas, how much money does Jordan have left?

• $35.87

• $32.87

• $28.87

• $30.87

What is the result of the expression 5 minus -4 divided by -3?

• 6

• -3

• 3

• -6