Representing an Unknown Quantity

Chapter 7

Percents-Mini Word Problems

​is means equals
of means multiply
choose an unknown variable that is not x

Draw

15 is what percent of 80?

Draw

24 is what percent of 60?

Draw

15% of what number is 18?

Draw

20% of what number is 24?

Draw

20% of 42 is what number?

Draw

19% of 60 is what number?

Fill in the Blanks

Fill in the Blanks

Calculate interest for first time period. Add amount to principal. Then calculate interest for second time period using the "new" principal. Continue for time period question is asking for.

Compounding

Calculate interest earned in 1 year and multiply by the number of years.

Simple

Interest Problems

Draw

Noah put $3000 into a savings account that earns 6% interest annually. After six years, how much money will Noah have?

Fill in the Blanks

Fill in the Blanks

Draw

Mari can walk 2.5 miles in 45 minutes. At this rate, how far can she walk in two and a half hours?

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Draw

Emily has a coupon for 20% off her purchase. The item she wants is $60 but also has 30% discount. Emily believes she will pay $30 for the item since 30% + 20% = 50%. Explain why Emily is wrong.

Draw

Emily has a coupon for 20% off her purchase. The item she wants is $60 but also has 30% discount. How much will Emily actually pay?

Multiple Choice

Kaden downloads 8 songs in 10 minutes. Lilly downloads 12 songs in 15 minutes. Who works faster?

• Kaden

• Lilly

• They work at the same speed.

Draw

Jonna signed up for gym membership starting in January. She paid $95 up front and will pay $20 a month starting in February. Masen signed up for $35 a month starting in Febraury with no sign-up fee. Create a table comparing both plans for 1 full year.

Draw

Jonna signed up for gym membership starting in January. She paid $95 up front and will pay $20 a month starting in February. Masen signed up for $35 a month starting in Febraury with no sign-up fee. What are the 2 equations that represent each payment?

Home

Open in new tab

Copy link

Draw

Carli's class built robots they raced in the cafeteria after school. Carli drew the graphs of each robot.