Lesson 3 Unlabeled Tick Marks

    • Let’s locate numbers on the number line.

Warm-up Notice and Wonder: From 0 to 30

What do you notice? What do you wonder?

A
Number line. Scale 0 to 30 by 1's. Evenly spaced tick marks. First tick mark, 0. Last tick mark, 30. Arrows starting at each number and ending at the next number, up to 30.
B
Number line. Scale 0 to 30 by 1's. Evenly spaced tick marks. 6 arrows, 0 to 5, 5 to 10, 10 to 15, 15 to 20, 20 to 25, 25 to 30.
C
Number line. Scale 0 to 30 by 1's. Evenly spaced tick marks. 3 arrows, 0 to 10, 10 to 20, 20 to 30.

Activity 1 Locate the Numbers

  1. Locate 24 on the number line. Mark it with a point.

    Number line. Scale 0 to 30 by 5's. Evenly spaced tick marks.

  2. Locate 37 on the number line. Mark it with a point.

    Number line. Scale 0 to 40 by 10's. Evenly spaced tick marks.

  3. Locate 48 on the number line. Mark it with a point.

    Number line. Scale 20 to 60, by 10's. Evenly spaced tick marks.

  4. Locate 83 on the number line. Mark it with a point.

    Number line. Scale 60 to 90 by 5's. Evenly spaced tick marks.

  5. Explain how you know the numbers you located are at the right spot on each number line.

Activity 2 Are You Missing Something?

Caterpillar with every other body segment labeled with a number. From left to right: 5, 10, 15, 20, 25, 30, 35.

Complete each number line by filling in the labels with the number the tick mark represents. Then, locate each number, mark it with a point, and label it with the number it represents.

  1. Locate and label 17 on the number line.

    Number line. 31 evenly spaced tick marks. First tick mark labeled 10, other tick marks labeled 25 and 30, four tick marks labeled blank.

  2. Locate and label 59 on the number line.

    Number line, partially labeled.

  3. Locate and label 43 on the number line.

    Number line. 35 to 55 by 5's. Evenly spaced tick marks. First tick mark, 35. Last tick mark, 55. Three tick marks with empty labels.

  4. Locate and label 35 on the number line.

    Number line. Partially labeled.

  5. Share your number lines with your partner.

Practice Problem

Problem 1

  1. Count by 10 starting at 50 and ending at 100. Label each of the numbers in your count on the number line.

  2. Locate and label 78 on the number line.

Number line. Scale 50 to 100 by 10's. Evenly spaced tick marks. First tick mark labeled 50, last tick mark labeled 100. 4 tick marks not labeled.