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Unit 5 - Lesson 12 - Grade 2: Illustrative Mathematics

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13 Questions
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Grade 2 Unit 5
Lesson 12: Order Numbers
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 5
Lesson 12: Order Numbers
CC BY 2021 Illustrative Mathematics®
Lesson: Order Numbers

Number Talk: Subtract Tens (Warm Up)

Find the value of each expression mentally.
1.

2.

3.

4.

Who is Out of Order?

Kiran and Andre put a list of numbers in order from least to greatest.

5.

Who do you agree with? Why?

Be prepared to explain your thinking. Use what you know about place value or the number line to justify your reasoning.

Order Numbers

6.

Estimate the location of 839, 765, 788, 815, and 719 on the number line. Mark each number with a point. Label the point with the number it represents.

7.

Order the numbers from least to greatest.

  1. 815
  2. 719
  3. 765
  4. 839
  5. 788
8.

Estimate the location of 199, 245, 173, 218, and 137 on the number line. Mark each number with a point. Label the point with the number it represents.

9.

Order the numbers from greatest to least.

  1. 173
  2. 137
  3. 245
  4. 218
  5. 199
10.

Order the numbers from least to greatest.


Explain or show your thinking. Use the number line if it helps.

  1. 504
  2. 405
  3. 545
  4. 454
  5. 445
11.

Was it more helpful for you to put the numbers in order first or put them on the number line first? Explain.

Cool Down: Estimate and Order
12.

Estimate the location and label 748, 704, 762, 789, and 712 on the number line.

13.

Order the numbers from least to greatest.

  1. 748
  2. 762
  3. 789
  4. 704
  5. 712