MCA: Number Sense #2

Front

What is a rational number?

Back

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

Front

What is an irrational number?

Back

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

Front

What is an integer?

Back

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

Front

What does it mean for a number to be an integer but not a rational number?

Back

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

Front

What is the process of simplification in mathematics?

Back

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

Front

What is 25% of a number?

Back

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

Front

How do you calculate the savings from a discount?

Back

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

Front

If a TV costs $199 and is on sale for 25% off, how much do you save?

Back

You save $49.75.

Front

What is the formula to find the total price after a discount?

Back

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

Front

What is the difference between rational and irrational numbers?

Back

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