Mr. Richards reviews homework problems from Unit 6, Lesson 2, covering true equations, word problems involving water bottles and pencil lengths, matching equations with solutions, and calculating percentages for vitamin C in oranges and instrument ownership in a band. The session concludes with multiplication of decimals and understanding place value.

Which of the following equations is true?

• 4 2/3 = 5 - 1/3

• 2/3 x 5/9 = 7/12

• 5 + 0 = 0

• 15 x 0 = 0

If Mae drank X ounces of water and 10 ounces were left, which equation represents the situation?

• X + 10 = 24

• 24 - X = 10

• 24 + 10 = X

• 24 / 10 = X

Priya has five pencils each X inches long. If they measure 34.5 inches end-to-end, which equation is correct?

• 34.5 x 5 = X

• 5 + X = 34.5

• 5X = 34.5

• 34.5 / 5 = X

What is the solution to the equation 2x = 4.6?

• 2.3

• 4.6

• 9.2

• 1.15

If 1/8 of F equals 3, what is F?

• 1/8

• 8

• 3

• 24

How many milligrams of vitamin C are in an orange if it contains 75% of the daily allowance of 45 mg?

• 22.5 mg

• 11.25 mg

• 45 mg

• 33.75 mg

If 20% of 90 kids own instruments, how many kids own their instruments?

• 72

• 45

• 90

• 18

What is the product of 0.25 and 1.4?

• 0.25

• 0.5

• 0.35

• 0.14

Calculate the product of 61 and 0.43.

• 262.3

• 0.2623

• 2.623

• 26.23

What is the result of multiplying 1017 by 72?

• 73224

• 75000

• 72000

• 70000