Calculating Percentages and Unit Prices

Mr. Richards guides grade 6 students through unit 6, lesson 1 practice problems. The lesson covers solving equations using tape diagrams, calculating unit prices, and understanding percentages. Students learn to visually represent equations, calculate unit prices for groceries, and determine calcium content in milk using percentages. The video emphasizes practical math applications and problem-solving skills.

What does the large rectangle in the tape diagram for X + 4 = 17 represent?

• The value of X

• The number 4

• The total value of 17

• The sum of X and 4

In the equation 5x = 35, how do you find the value of x using a tape diagram?

• Add 5 to 35

• Multiply 35 by 5

• Divide 35 by 5

• Subtract 5 from 35

What is the value of x in the equation X + 9 = 16?

• 16

• 9

• 25

• 7

How do you solve 4x = 28 using a tape diagram?

• Divide 28 by 4

• Add 4 to 28

• Multiply 28 by 4

• Subtract 4 from 28

What is the unit price per pound of potatoes if 4.5 pounds cost $2.52?

• $0.56

• $1.12

• $0.75

• $0.45

If 2.5 pounds of pears cost $2.45, what is the unit price per pound?

• $0.75

• $1.22

• $0.98

• $1.00

How many fluid ounces did Dondre drink if he consumed 80% of a 16.9-ounce bottle?

• 8.45 ounces

• 10.5 ounces

• 13.52 ounces

• 16.9 ounces

What percentage of the recommended daily calcium value is in one cup of milk?

• 100%

• 75%

• 25%

• 50%

How many milligrams of calcium are in a cup of milk if it contains 25% of the daily recommended value?

• 900 mg

• 1200 mg

• 600 mg

• 300 mg

What is the first step in using a double number line to find 25% of a value?

• Add 25

• Divide by 4

• Subtract 25

• Multiply by 4