Mathematical Concepts Review

Mr. Merchant reviews math concepts for the CBA, covering fraction and percent conversions, temperature changes, submarine depth calculations, shaded model percentages, order of operations, expression equivalence, and number line order. The session includes practical examples and problem-solving techniques to reinforce understanding.

What is the main purpose of this review session?

• To review for the math CBA

• To introduce new math concepts

• To discuss history topics

• To prepare for a science test

If 3 out of 5 candies are eaten, what fraction represents this?

• 2/5

• 4/5

• 1/5

• 3/5

How do you convert the fraction 3/5 to a percentage?

• Multiply by 10

• Multiply by 20

• Multiply by 100

• Multiply by 50

What is the change in temperature from -3 degrees to 12 degrees?

• 15 degrees

• 9 degrees

• 12 degrees

• 18 degrees

How do you calculate the change in temperature using absolute values?

• Add the absolute values of both temperatures

• Subtract the absolute values of both temperatures

• Multiply the absolute values of both temperatures

• Divide the absolute values of both temperatures

On which day will a submarine first reach a depth of 400 feet if it descends 30 feet daily?

• Day 15

• Day 13

• Day 12

• Day 10

How do you determine the day a submarine reaches a certain depth?

• By adding the daily descent to the total depth

• By subtracting the daily descent from the total depth

• By multiplying the daily descent by the number of days

• By dividing the total depth by the daily descent

Which model is 55% shaded if 11 out of 20 parts are shaded?

• Model A

• Model B

• Model C

• Model D

How do you convert 11/20 to a percentage?

• Multiply by 10

• Multiply by 5

• Multiply by 20

• Multiply by 2

What is the result of 14 times -30 plus 5 using order of operations?

• -420

• -415

• -425

• -410