The world of numbers
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The world of numbers
The exam covers the fundamental concepts of numbers: types of numbers (natural, whole, integers, rational, irrational, real), their properties, and operations. Focus on the number line, absolute value, and basic arithmet...
Sample questions with model answers
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Explain the difference between rational and irrational numbers with examples, and show how to locate √2 on a number line.
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Rational: p/q (e.g., 1/2); Irrational: non-terminating non-repeating (e.g., √2); √2 is located by constructing a right triangle with legs 1 and 1.
The full exam-length answer is in the app.
Describe the real number system and its subsets.
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Real numbers include rationals (integers, fractions) and irrationals; they cover all points on the number line.
The full exam-length answer is in the app.
Solve: (3/4) × (8/9) ÷ (2/3).
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(3/4 × 8/9) = 2/3; then (2/3) ÷ (2/3) = 1.
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A shirt costs $40 and is on sale for 25% off. What is the sale price?
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Discount = 25% of $40 = $10; sale price = $30.
The full exam-length answer is in the app.
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