Google Classroom
Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
Multiplying 3-Digit by 1-Digit Numbers Using an Area Model
Author:
Tim Brzezinski
Topic:
Area
,
Mathematics
,
Multiplication
,
Numbers
To evaluate 261 x 3, note how (in the pic) we decomposed 261 into "200 + 60 + 1", and then filled in the areas and then added these areas.
Decompose the 3-digit number being multiplied into hundreds, tens, and ones. Then find the area of each rectangle and add them!
GeoGebra
New Resources
Publish app "Public" test
Building Parallelograms with Set Areas
seo tool
Slope Between 2 Points (Phase 2)
Perimeter of Rectangle
Discover Resources
Maximizing Area
Algebra Project
Gradient Descent vs Saddles (matrix factorization)
x - x^2...
Focus and Directrix
Discover Topics
Scatter Plot
Median Line
Expected Value
Circle
Trigonometric Functions