Topics
6. Multiplication and division
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United States of AmericaUT
Grade 3

6.05 Finding unknowns

Lesson
Practice
Lesson

Are you ready?

Remembering your multiplication tables will help you solve problems in this lesson. Let's give this problem a try. 

$5\times9$5×9

Learn

This video shows us how to find unknowns using our multiplication and division facts.

Apply

Fill in the box with the missing number.

  1. $9\times\editable{}=63$9×=63

 

Remember!

For multiplication the order doesn't matter, so if we have $4\times5$4×5, we can also write it as $5\times4$5×4 and get the same answer.  

Outcomes

3.OA.4

Determine the unknown whole number in a multiplication or division equation relating three whole numbers.

3.OA.7

Fluently multiply and divide.

3.OA.7.a

Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division or properties of operations.

3.OA.7.b

By the end of Grade 3, know from memory all products of two one-digit numbers.

3.OA.6

Understand division as an unknown-factor problem. Understand the relationship between multiplication and division (multiplication and division are inverse operations).

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