Unit 4: Understand and Use Percentages

What percent is represented by the bottom bar in the tape diagram?

• 20%
• 60%
• 80%
• 40%

• 40%

• 50%

• 30%

• 60%

Answer explanation

To find the percent of sales for dog and cat products, add 0.3 (30%) for dog products and 0.1 (10%) for cat products. 0.3 + 0.1 = 0.4, which is 40%. Thus, the correct answer is 40%.

Tags

CCSS.7.RP.A.3

Answer explanation

To find the percentage of games that do NOT cost $1 or $2, first calculate the total percentage of games that do cost $1 (62.5%) and $2 (2.5%). Adding these gives 65%. Therefore, 100% - 65% = 35% do NOT cost $1 or $2.

Tags

CCSS.6.RP.A.3C

Identify the percent modeled in the 10 × 10 grids.

A total of 160 people were surveyed for a taste test of two flavors for a drink. The results show that 65% prefer the new flavor. How many of the people surveyed prefer the new flavor?

Answer explanation

To find how many people prefer the new flavor, calculate 65% of 160. This is 0.65 * 160 = 104. Therefore, 104 people prefer the new flavor.

Tags

CCSS.6.RP.A.3C

Georgia says she can make 11 out of 20 blankets for a craft show. She has already made 3 blankets. What percent of the 20 blankets does she still have to make?

• 15%

• 30%

• 40%

• 55%

What number is 53% of 300?

• 159

• 200

• 180

• 150

Answer explanation

To find 53% of 300, multiply 300 by 0.53: 300 * 0.53 = 159. Therefore, the correct answer is 159.

Tags

CCSS.6.RP.A.3C

800% of what number is 168?

• 42

• 35

• 14

• 21

Answer explanation

To find the number, set up the equation: 800% of x = 168. This translates to 8x = 168. Dividing both sides by 8 gives x = 21. Thus, 800% of 21 is 168, making 21 the correct answer.

Tags

CCSS.6.RP.A.3C

The number of students in the chorus makes up 15% of the students in the sixth grade. If there are 24 students in the chorus, how many students are in the sixth grade?

• 36

• 160

• 240

• 360

Answer explanation

Let x be the total number of sixth graders. Since 15% of x equals 24, we have 0.15x = 24. Solving for x gives x = 24 / 0.15 = 160. Thus, there are 160 students in the sixth grade.

Tags

CCSS.6.RP.A.3C