Rational Numbers Quiz for Class 5

What is a rational number?

• A rational number is any number that can be expressed as a fraction where the numerator and denominator are integers, and the denominator is zero.

• A rational number is a number that is always a whole number.

• A rational number is a number that cannot be expressed as a fraction.

• A rational number is any number that can be expressed as a fraction where the numerator and denominator are integers, and the denominator is not zero.

Is 0 a rational number? Why or why not?

• Maybe

• Yes

• Sometimes

• No

Give an example of a rational number that is not an integer.

• 3/2

• 5/2

• 7/4

• 4/3

Explain how to convert a fraction into a decimal.

• Multiply the numerator by the denominator.

• Subtract the numerator from the denominator.

• Add the numerator and denominator together.

• Divide the numerator by the denominator.

Are all integers rational numbers? Why or why not?

• Yes

• No, because integers can be irrational numbers

• No, because integers can be imaginary numbers

• No, because integers can be complex numbers

What is the difference between a rational number and an irrational number?

• Irrational numbers are always negative

• Irrational numbers can always be expressed as a ratio of two integers

• Rational numbers can be expressed as a ratio of two integers, while irrational numbers cannot be expressed as a simple fraction.

• Rational numbers are always whole numbers

If a number can be expressed as a fraction, is it always a rational number?

• Sometimes

• Not sure

• No

• Yes

How can you determine if a number is rational or irrational?

• Check if the number is divisible by 3

• Count the number of vowels in the number

• Ask a magic eight ball

• Check if the number can be expressed as a fraction of two integers. If it can, then it is rational; otherwise, it is irrational.

What is the decimal representation of the rational number 3/4?

• 0.25

• 0.75

• 1.25

• 0.5

Can a rational number be negative? Provide an example.

• No, rational numbers are always fractions.

• Yes, a rational number can be negative. For example, -3/4.

• Yes, rational numbers can only be positive integers.

• No, rational numbers are always positive.