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3rd Grade Math
1. 3.OA.A.1
1.4 Using Models to Multiply Up to 999
Using Models to Multiply Up to 999
See how breaking a number into hundreds, tens, and ones with an area model makes multiplying up to 999 easy to picture and solve step by step.
What You'll Learn
Break a multi-digit number into hundreds, tens, and ones before multiplying, such as \( 213 = 200 + 10 + 3 \)
Multiply each place value separately, for example \( 4 \times 200 \), \( 4 \times 10 \), and \( 4 \times 3 \)
Add the partial products together to reach the final answer, \( 800 + 40 + 12 = 852 \)
Draw an area model as a rectangle split into place-value sections to visualize each partial product
Use an array model of rows and columns as another way to picture the same multiplication
Compare the area model result to repeated addition or mental strategies to check your answer
What You'll Practice
1
Selecting area models that match given multiplication statements
2
Identifying correct visual representations for two- and three-digit multiplication
3
Matching equations to their corresponding rectangular area models
Why This Matters
Area models build your number sense and help you understand why multiplication works, making mental math easier. This visual approach prepares you for multiplying larger numbers, algebra, and calculating real-world areas like room dimensions or garden plots.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Area Models
Multiplication
Place Value
Visual Representation
Multi-Digit Multiplication
Distributive Property
OH Curriculum Aligned