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Unit 4

Compare and Order Numbers

Lesson 17

Numbers to 99

Expressions and Equations

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Let’s compare and order numbers.

Unit 4 ● Lesson 17

Learning

Goal

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Comparison Statements

Unit 4 ● Lesson 17 ● Warm-up

Which one doesn’t belong?

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A. B.

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C. D.

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Which One Doesn’t Belong?

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Compare and Order Quantities

Unit 4 ● Lesson 17 ● Activity 1

Talk with your partner and decide how to order these cards from least to greatest.

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Launch

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Compare and Order Quantities

Unit 4 ● Lesson 17 ● Activity 1

Pick a set of cards.

Put the cards in order from least to greatest.

Be ready to explain how you ordered your cards.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Compare and Order Quantities

Unit 4 ● Lesson 17 ● Activity 1

Write the numbers in order from least to greatest.

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Set A: ______________________________________________

Set B: ______________________________________________

Set C: ______________________________________________

Set D: ______________________________________________

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If you have time:

  • Mix two sets of cards together.
  • Put them in order from least to greatest.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Compare and Order Quantities

Unit 4 ● Lesson 17 ● Activity 1

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Let’s share how you ordered your cards.

How are these methods the same?

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Activity Synthesis

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Order Numbers

Unit 4 ● Lesson 17 ● Activity 2

What do you notice? What do you wonder?

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1 5 10 50 99

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Launch

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Order Numbers

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Unit 4 ● Lesson 17 ● Activity 2

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  1. Here are some numbers in order:

1 5 10 50 99

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Add these numbers to the list:

49 8 25 98 13

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Make sure all the numbers are in order from least to greatest.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Order Numbers

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Unit 4 ● Lesson 17 ● Activity 2

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  1. Choose 2 numbers. Explain how you knew where to place them.
  2. I knew where to place because
  3. I knew where to place because

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  • Write a number that makes each comparison statement true.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Order Numbers

Unit 4 ● Lesson 17 ● Activity 2

1 5 10 50 99

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Let’s share different methods for determining where to place each number.

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Activity Synthesis

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Compare and Order Numbers

Unit 4 ● Lesson 17

In this section, we compared and ordered two-digit numbers. What are some things that can help us order numbers?

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Lesson Synthesis

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Which Numbers Belong

Unit 4 ● Lesson 17

  1. Circle 3 numbers that are greater than 75 and less than 95.

8 92 74 99 81 78

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  • Write a number that makes each comparison statement true.
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Cool-down

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.