MCA: Number Sense #2

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

An irrational number is a number that cannot be expressed as a simple fraction; it cannot be written as a ratio of two integers.

An integer is a whole number that can be positive, negative, or zero, but not a fraction or decimal.

This is not possible; all integers are rational numbers because they can be expressed as a fraction with a denominator of 1.

Simplification is the process of reducing a mathematical expression to its simplest form.

25% of a number is equivalent to multiplying the number by 0.25.

To calculate savings from a discount, multiply the original price by the discount percentage.

You save $49.75.

Total Price = Original Price - (Original Price x Discount Percentage).

Rational numbers can be expressed as fractions, while irrational numbers cannot be expressed as fractions.