Converting Percent Bars to Proportions

Why might using a proportion be more efficient than using a percent bar every time?

• Proportions can be quicker and simpler.

• Percent bars are not useful at all.

• Proportions are always more accurate.

• Percent bars are only for advanced calculations.

If the original cost is $80 and the tip is 20%, what is the total cost?

• $100

• $120

• $80

• $96

How do you find 10% of a number using a percent bar?

• Multiply by 10

• Divide by 10

• Add 10

• Subtract 10

What is the scale factor when converting 80 to 100?

• 1.2

• 1.25

• 0.75

• 0.8

In a proportion, what do the labels on both sides need to do?

• Be larger on one side

• Match

• Be different

• Be smaller on one side

If a bill at a restaurant is $58 and the tip is 15%, what is the tip amount?

• $8.70

• $15.00

• $5.80

• $10.00

What is the total cost if the original bill is $58 and the tip is $8.70?

• $66.70

• $58.00

• $70.00

• $65.00

What does the percent represent in the general format for percent proportions?

• The whole amount

• A part out of the whole

• The total cost

• The original amount

What is the original cost if the sales tax is 6% and the total cost is $106?

• $94

• $112

• $106

• $100

What is the format used for every percent proportion?

• Percent out of 100 equals whole over part

• Whole over part equals percent out of 100

• Part over whole equals percent out of 100

• Whole over percent equals part out of 100