Semester Exam Review

Front

What is the result of the addition equation -6 + 9?

Back

3

Front

If the temperature at 4pm is 85 degrees Fahrenheit and it drops 5 degrees every hour, what is the temperature at 9pm?

Back

60

Front

How far does a missile have to travel from a submarine 500 feet below sea level to a hot air balloon 8,550 feet above sea level?

Back

9050

Front

What is the percent of change from 24 teachers to 30 teachers?

Back

25% increase

Front

Which equation represents the 2-color counters shown in the image: 4 counters of one color and 5 counters of another color?

Back

4 - 5 = -1

Front

Define 'percent of change'.

Back

The percent of change is the ratio of the amount of change to the original amount, expressed as a percentage.

Front

What does a negative number represent in a real-world context?

Back

A negative number can represent a loss, a debt, or a position below a reference point, such as sea level.

Front

Explain the concept of absolute value.

Back

Absolute value is the distance of a number from zero on the number line, regardless of direction.

Front

What is the formula for calculating percent increase?

Back

Percent Increase = (New Value - Original Value) / Original Value × 100%.

Front

What is the significance of the number zero in mathematics?

Back

Zero represents the absence of quantity and serves as a neutral element in addition and subtraction.