Unit 1 - Lesson 14 - Grade 3: Illustrative Mathematics

Last updated 11 months ago

7 questions

Note from the author:

Grade 3 Unit 1
Lesson 14: Write and Solve Equations with Unknowns
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 3 Unit 1
Lesson 14: Write and Solve Equations with Unknowns
CC BY 2021 Illustrative Mathematics®

Lesson: Write and Solve Equations with Unknowns

Cool Down: Unknown and a Number

Library

Unit 1 - Lesson 14 - Grade 3: Illustrative Mathematics

Last updated 11 months ago

7 questions

Note from the author:

Grade 3 Unit 1
Lesson 14: Write and Solve Equations with Unknowns
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 3 Unit 1
Lesson 14: Write and Solve Equations with Unknowns
CC BY 2021 Illustrative Mathematics®

Lesson: Write and Solve Equations with Unknowns

Number Talk: Fives (Warm Up)

Find the value of each expression mentally.

Question 1

1 x 5

Question 2

2 x 5

Question 3

3 x 5

Question 4

4 x 5

Card Sort: Unknown Numbers

Your teacher will give you a set of cards. Match each equation with a situation or diagram.

Write Equations with an Unknown Number

Directions:
Write an equation to represent each diagram or situation. Use a symbol for the unknown. Be prepared to share your reasoning.
Find the number that makes each equation true. Rewrite the equation with the solution.

Question 5

Find the number that makes each equation true.

Rewrite the equation with the solution.