Write an equation to match the diagram. Use a symbol for the unknown.
Write an equation to match the diagram. Use a symbol for the unknown.
Grade 3 Unit 1
Lesson 14: Write and Solve Equations with Unknowns
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 1
Lesson 14: Write and Solve Equations with Unknowns
CC BY 2021 Illustrative Mathematics®
Find the value of each expression mentally.
1 x 5
2 x 5
3 x 5
4 x 5
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.
Find the number that makes each equation true.
Rewrite the equation with the solution.
Write an equation to match the diagram. Use a symbol for the unknown.
Find the number that makes the equation true. Rewrite the equation with that number. Explain your reasoning.