Lesson 18 Compare Without Multiplying

    • Let’s compare expressions, without evaluating them.

Warm-up Notice and Wonder: Expressions and Number Lines

What do you notice? What do you wonder?

Activity 1 Approximate Location

Problem 1

Label each expression at its approximate location on the number line.

  1. Partner A

    Number line. 2 tick marks, labeled 0, 12.
  2. Partner B

    Number line. 2 tick marks, labeled 0, 12.

Problem 2

Choose a number to put in each box to make the statement true.

Activity 2 An Unknown Number

  1. The number A is shown on the number line. Label the approximate location of the value of each expression. Explain or show your reasoning.

    Number line. First tick mark, 0. Point, labeled A, to the right of 0.
  2. Is less than, greater than, or equal to ? Explain or show your reasoning.

  3. Is less than, greater than, or equal to ? Explain or show your reasoning.

Practice Problem

Problem 1

The point A is labeled on the number line.

Label each of these points on the number line.

Number line. Tick mark, labeled 0. Point, labeled A to the right.