Topic 3 Mid-Topic Assessment

Fill in the blanks with the provided words to explain how the percent relates proportional quantities. A percent is a ​ (a)   of proportionality describing the ​ (b)   of the ​ (c)   .

• constant
• part
• whole

Sewing patterns recommend buying extra fabric in case of mistakes. Jessica bought 5 yards of fabric, plus 20% extra fabric. Derek bought 3 yards of fabric, plus 25% extra. Who bought more fabric? How much more?

• Jessica bought 3 yards more than Derek.
• Jessica bought 2.25 yards more than Derek.
• Derek bought 2 yards less than Jessica.
• Derek bought 1.5 yards more than Jessica.

Lou and Jacob each sold 200 pieces of jewelry. If 20% of Lou’s sales were rings, and Jacob sold 35 rings, who sold more rings? How many more?

• Jacob sold 5 more rings than Lou.
• Lou sold 10 more rings than Jacob.
• Lou and Jacob sold the same number of rings.
• Lou sold 5 more rings than Jacob.

Elsie bought a video game for $85.00. If the store charges 170% of what it paid for the game, how much is the store’s profit?

• $35.00

• $100.00
• $70.00
• $45.00

Fill in the blanks with the correct percent that represents each situation.

Katrina made 4 of her last 5 shots. ​ ​ (a)  

Miguel runs faster than his 19 teammates. What percent of the team is slower than Miguel? ​ (b)  

Fifty of 150 students wear school spirit T-shirts. ​ (c)  

Micah saved $6 on a $40 pair of pants.​ (d)  

​

• 80%
• 95%
• 33.33%
• 15%

If you know that 84 is 70% of the whole, how can you use proportional reasoning to determine the whole?

• A. 70/100 shows 70% as a ratio. The ratio 84/x compares 84 to the whole, x. These ratios must be equal, so write an equation and solve for x: x = 120.

• B. 70/100 shows 70% as a ratio. The ratio 84/x compares 84 to the whole, x. Multiply these ratios to find x: x = 58.8.

• C. 70/100 shows 70% as a ratio. The ratio x/84 compares 84 to the whole, x. These ratios must be equal, so write an equation and solve for x: x = 58.8.

• D. 70/100 shows 70% as a ratio. The ratio x/84 compares 84 to the whole, x. Multiply these ratios to find x: x = 120.