Mathematics - International - 0607 CIE

Ordering

Overview

Putting numbers in order sounds simple, but it is where careless mistakes with negatives, fractions and decimals quietly creep in. A clear understanding of size, helped by a number line, lets you order any mix of numbers correctly and use the inequality symbols with confidence.

In this lesson you will order quantities by magnitude and become fluent with the symbols for equals, not equals, greater than, less than, and the two 'or equal to' symbols. These ideas lead straight into inequalities later in the course.

Objectives

  1. Order quantities by magnitude and demonstrate familiarity with the symbols =, ≠, >, <, ⩾ and ⩽.

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Flashcards

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Lesson Note

Comparing sizes correctly underlies inequalities, bounds and reading data. The number line is the picture that makes ordering, especially with negative numbers, reliable.

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Lesson Evaluation

Congratulations on completing the lesson on Ordering. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.

You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.

Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.

  1. Which list is in order from smallest to largest? A. -0.5, -3, 1, 2.5 B. -3, -0.5, 1, 2.5 C. 2.5, 1, -0.5, -3 D. -3, 1, -0.5, 2.5 Answer: B
  2. Which symbol correctly completes -4 __ -1? A. > B. < C. = D. ≥ Answer: B
  3. Which number is the smallest? A. -2 B. -5 C. 0 D. 1 Answer: B
  4. Which of these is the largest? A. 2/3 B. 0.6 C. 60% D. 3/5 Answer: A
  5. The symbol ⩾ means: A. greater than B. less than C. greater than or equal to D. not equal to Answer: C

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