Solving Equations and Word Problems

This video tutorial covers unit 6 lesson 2 on truth and equations. It includes exercises on selecting true equations, solving problems related to Mai's water bottle and Priya's pencil lengths, matching equations with solutions, calculating vitamin C content in an orange, and determining instrument ownership in a band. The lesson emphasizes problem-solving and mathematical reasoning.

Which of the following equations is true?

• 15 times 0 equals 15

• 15 times 0 equals 0

• 15 times 2 equals 30

• 15 times 1 equals 15

If Mai's water bottle initially had 24 ounces and now has 10 ounces left after drinking, which equation represents the amount she drank?

• 24 + x = 10

• 24 - x = 10

• 24 - 10 = x

• x + 24 = 10

Priya has 5 pencils, each x inches long, and they measure 34.5 inches in total. Which equation represents this situation?

• 5 + x = 34.5

• 5x = 34.5

• x/5 = 34.5

• 5x + 5 = 34.5

Which equation represents the scenario where 34.5 divided by 5 equals x?

• 5 + x = 34.5

• x/5 = 34.5

• 34.5/5 = x

• 5x = 34.5

What is the value of 'a' if 2a equals 4.6?

• 4.6

• 2.3

• 1.3

• 3.3

If one-eighth of 'f' equals 3, what is the value of 'f'?

• 8

• 24

• 3

• 16

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

• 33.75 mg

• 22.5 mg

• 45 mg

• 11.25 mg

What percentage of kids rent their instruments if 20% own them?

• 20%

• 40%

• 80%

• 60%

If 90 kids are in the band and 18 own their instruments, how many rent them?

• 45

• 90

• 18

• 72

If 100% of the kids in the band is 90, what is 10% of the kids?

• 9

• 18

• 90

• 45