Pre-Algebra Mixed Review # 2

Front

What set of numbers includes (...,-3, -2, -1, 0, 1, 2, 3...)?

Back

Integers

Front

How do you calculate the percent increase from $10 to $16?

Back

Percent Increase = ((New Price - Old Price) / Old Price) * 100 = ((16 - 10) / 10) * 100 = 60%.

Front

Which of the following is not a rational number: √80, √9, 2½, -7?

Back

√80 is not a rational number.

Front

What property is used when distributing a number across a sum or difference?

Back

Distributive Property.

Front

Solve for n: 5(1 + 4n) − 2n = −13.

Back

n = -1.

Front

What are integers?

Back

Integers are whole numbers that can be positive, negative, or zero.

Front

Define natural numbers.

Back

Natural numbers are the set of positive integers starting from 1 (1, 2, 3, ...).

Front

What is the difference between whole numbers and integers?

Back

Whole numbers include all natural numbers and zero, while integers include negative numbers as well.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b ≠ 0.

Front

What is the formula for percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) * 100.