Understanding Rational Numbers

What is a rational number?

• A number that is always negative

• A number that is always positive

• A number that cannot be expressed as a fraction

• A number that can be expressed as a fraction with integers

How can 0.4 be expressed as a fraction?

• 2/5

• 4/10

• 1/2

• 3/4

What is the denominator used when converting 0.4 to a fraction?

• 5

• 100

• 10

• 1

What is the simplified form of -0.186 as a fraction?

• -186/1000

• -93/1000

• -93/500

• -186/500

Which of the following is a method to simplify fractions?

• Subtract the denominator from the numerator

• Multiply both numerator and denominator by the same number

• Divide both numerator and denominator by their greatest common divisor

• Add the numerator to the denominator

What is the denominator used when converting -0.186 to a fraction?

• 10

• 100

• 1000

• 500

How can 30.5 be expressed as an improper fraction?

• 30/5

• 61/2

• 305/10

• 305/5

What is the first step in converting a mixed number to an improper fraction?

• Divide the numerator by the denominator

• Multiply the whole number by the denominator

• Subtract the numerator from the whole number

• Add the numerator to the denominator

What is the simplified form of -1.48 as a fraction?

• -37/25

• -148/25

• -148/100

• -74/50

What is the denominator used when converting -1.48 to a fraction?

• 10

• 100

• 50

• 25