Evaluating Expressions in Pre-Algebra

This video tutorial covers writing and evaluating algebraic expressions. It begins with an introduction to expressions, emphasizing the absence of equal signs. The lesson includes examples such as a dog feeder, bank account, and rental scenarios, demonstrating how to write and evaluate expressions. The tutorial concludes with a summary and encourages students to reach out with questions.

What is a common mistake students make when writing algebraic expressions?

• Forgetting to use parentheses

• Including an equal sign

• Using variables incorrectly

• Using the wrong operation

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2

In the automatic dog feeder example, what does the variable 'd' represent?

• The total amount of food

• The number of days

• The amount of food dispensed each day

• The number of dogs

Tags

CCSS.HSF.LE.B.5

How much food is dispensed each day by the automatic dog feeder?

• 2 cups

• 1 cup

• 2/5 cups

• 1/5 cups

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CCSS.5.MD.B.2

What is the initial amount of money in Mimi's bank account?

• $275

• $250

• $217

• $200

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CCSS.8.F.B.4

CCSS.HSF.LE.A.2

How much does Mimi deposit each week?

• $25.00

• $20.50

• $25.50

• $30.00

Tags

CCSS.6.EE.B.6

In the expression 9.99d + 12.99c, what does 'd' represent?

• Cost per pound of cashews

• Pounds of almonds

• Pounds of cashews

• Cost per pound of almonds

Tags

CCSS.HSA-SSE.A.1A

How much does it cost to buy 1.5 pounds of almonds?

• $14.99

• $9.99

• $14.985

• $15.00

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CCSS.6.NS.B.3

What is the cost to rent a scooter per hour?

• $115.50

• $15.50

• $10.50

• $22.80

Tags

CCSS.6.EE.B.7

How much does Malik spend on lunch each week?

• $35.00

• $32.50

• $40.00

• $30.00

Tags

CCSS.6.EE.B.8

How much does Amelia earn per hour?

• $8.00

• $9.00

• $8.50

• $8.74

Tags

CCSS.HSF-LE.A.1B