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Unknown in Multiplication

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Lesson Plans and Worksheets for Grade 3
Lesson Plans and Worksheets for all Grades
Common Core For Grade 3
More Lessons for Grade 3 Math



Examples, videos, and solutions to help Grade 3 students learn how to interpret the unknown in multiplication and division to model and solve problems.

Common Core Standards: 3.OA.3, 3.OA.4, 3.OA.5, 3.OA.7, 3.OA.1, 3.OA.2, 3.OA.6, 3.OA.8

New York State Common Core Math Grade 3, Module 3, Lesson 7

Worksheets for Grade 3, Module 3, Lesson 7

Concept Development

Thad sees 7 beetles when he weeds his garden. Each beetle has 6 legs. How many legs are there on all 7 beetles?

Lesson 7 Homework
1. Match the words on the arrow to the correct equation on the target.

2. Ari sells 6 boxes of pens at the school store.
a. Each box of pens sells for $7. Draw a tape diagram and label the total amount of money he makes as m. Write an equation and solve for m.
b. Each box contains 6 pens. Draw a tape diagram and label the total number of pens as p. Write an equation and solve for p.

3. Mr. Lucas divides 28 students into 7 equal groups for a project. Draw a tape diagram and label the number of students in each group as n. Write an equation and solve for n.



Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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