Writing Expressions from Word Problems

The video tutorial covers writing expressions from word problems, starting with a cheat sheet of keywords. It explains how to form expressions for various scenarios, such as Jeff's earnings per hour, his total money with initial savings, Katie's weekly savings, the cost of Froyo per ounce, and buying pens with a budget. The tutorial emphasizes identifying keywords, recognizing patterns, and using variables to represent unknown quantities.

What is the purpose of the cheat sheet mentioned in the video?

• To keep track of the operations needed for different keywords

• To help remember the steps in solving word problems

• To provide answers to common word problems

• To list all possible word problems

If Jeff makes $7 per hour, how would you write the expression for his earnings in h hours?

• 7 + h

• 7 / h

• 7 * h

• 7 - h

Jeff has $10 and makes $7 per hour. What is the expression for his total money after h hours?

• 10 * 7 * h

• 10 / 7 * h

• 10 + 7 * h

• 10 - 7 * h

Katie has $15 saved and saves $10 each week. What is the expression for her total savings after w weeks?

• 15 / 10 * w

• 15 * 10 * w

• 15 - 10 * w

• 15 + 10 * w

The cost for Froyo is 33 cents per ounce. How would you write the expression for the cost of x ounces?

• 0.33 * x

• 0.33 - x

• 0.33 + x

• 0.33 / x

You have $12 but spend $2 on each pen you buy. What is the expression for the remaining money after buying k pens?

• 12 + 2 * k

• 12 - 2 * k

• 12 * 2 * k

• 12 / 2 * k

What should you do first when writing an expression for a word problem?

• Highlight the keywords

• Solve the problem directly

• Ignore the keywords

• Guess the answer

Why is it helpful to make a table when solving word problems?

• To avoid using variables

• To make the problem more complicated

• To guess the answer

• To see the pattern as you add more units

What does a variable represent in a word problem?

• A known quantity

• A fixed number

• An unknown quantity

• A constant value

What keyword indicates that you should multiply in a word problem?

• Each

• But

• And

• Or