Unit 3 - Lesson 6 - Grade 2: Illustrative Mathematics

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Grade 2 Unit 3
Lesson 6: Compare Reptile Lengths in Story Problems
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 2 Unit 3
Lesson 6: Compare Reptile Lengths in Story Problems
CC BY 2021 Illustrative Mathematics®

Lesson: Compare Reptile Lengths in Story Problems

Number Talk: Fives and Tens (Warm Up)

Find the value of each expression mentally.

Whose Pet is Longer?

Lin's pet lizard is 62 cm long. It is 19 cm shorter than Jada's. How long is Jada's pet lizard?

_______ cm

Whose pet is longer?

Circle the diagram that matches the story.

Solve. Show your thinking.

Jada's pet lizard is _______ cm long.

Diego and Mai have pet snakes. Mai’s snake is 17 cm longer than Diego’s. Mai’s snake is 71 cm. How long is Diego’s pet snake?

_______ cm

Whose pet is shorter?

Circle the diagram that matches the story.

Solve. Show your thinking.

Diego’s pet snake is _______ cm long.

Guess My Reptiles

Choose one reptile from your list and one reptile from your partner’s list.

Fill in the blanks to create a story problem using the lengths of the reptiles you picked. Then share your sentences with your partner.

My reptile is _______ cm long.

It is _______ cm _______ (shorter/longer) than one of your reptiles.

Which reptiles did your partner pick? Show your thinking.

Cool Down: Kiran and Han Compare Pets

Kiran’s pet snake is 47 cm long. It is 26 cm shorter than Han’s pet snake.

How long is Han’s pet snake?
_______ cm

Circle the diagram that matches the story.

Solve. Show your thinking.

Han’s snake is _______ cm long.