Practice Assessment Questions (8) - Chapter 1 : Number System

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6 sample questions

Question 1.
What makes 0.666... a rational number?
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Think about how to convert a repeating decimal into a fraction.
Question 2.
What is the opposite of 5²?
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Recall the definition of negative exponents.
3Question 3.
Why is 0.333... a rational number?
- It can't be expressed as a fraction
- It can be expressed as 1/3
- It's an irrational number
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Think about converting repeating decimals to fractions.
4Question 4.
Is 7⁻² equal to 1/7²?
- True
- False
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Recall the definition of negative exponents.
Question 5.
Prove that the sum of any two rational numbers is rational.
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Focus on finding a common denominator.
Question 6.
Show that the product of a non-zero rational number and an irrational number is irrational.
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Consider the definition of irrationality.

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