7th Grade Review

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where C is the circumference and r is the radius.

Front

If Reynaldo saves $48 in 8 days, how much does he save per day?

Back

$6 per day.

Front

What is the new location of a diver who descends 30 feet from 150 feet below sea level?

Back

180 feet below sea level.

Front

How do you calculate the temperature change from midnight to noon if it drops 5 degrees and then increases by 11 degrees?

Back

Start at 30 degrees, drop to 25 degrees, then increase to 36 degrees.

Front

What is the probability of picking a quarter from a bag containing 5 quarters, 2 dimes, and 4 pennies?

Back

5/11.

Front

What is the total number of coins in the bag containing 5 quarters, 2 dimes, and 4 pennies?

Back

11 coins.

Front

How do you find the average savings per week if Reynaldo saves $48 in 8 days?

Back

Multiply daily savings by 7 days: $6 * 7 = $42.

Front

What is the significance of rounding in measurements like circumference?

Back

Rounding helps simplify numbers for easier understanding and communication.

Front

What does it mean to be below sea level?

Back

It means the location is at a depth lower than the average level of the ocean.

Front

How do you convert temperature changes into final temperature?

Back

Add or subtract the temperature change from the initial temperature.