Multiplication Arrays and Area Models
Presentation
•
Mathematics
•
4th Grade
•
Hard
Joseph Anderson
FREE Resource
11 Slides • 5 Questions
1
Standard:
4.NR.2.3- Solve relevant problems involving multiplication computation using rectangular arrays (bar models), an equation, or area model
Learning Target:
Today I am learning to solve problems involving the multiplication of a number with up to four digits by a 1-digit whole number or involving the multiplication of two two-digit numbers using strategies based on area models.
2
Sucess Criteria: I can...
use area models to multiply!
3
An area model is a rectangular diagram used in mathematics to solve multiplication problems!
(A strategy for multi-digit multiplication)
What is an area model?
4
Area Models use...
partial products to help find the total product of our multiplication equation!
place value to make multiplying easier!
5
Area Model- 2 digit by 1
6
Let's look at a step by step example!
How do I create an area model when multiplying 3 digits by a 1 digit number?
7
Draw your rectangle.
Break apart your numbers using place value. (expanded form)
Multiply using each value and record your partial products in your model.
Add all of your partial products to get the total product!
Now let's look at multiplying 4 digits by 1 digit!
8
7 x 1,328 =
Let's complete one together!
9
10
Your turn...
Let's answer each question.
How well do you understand area models?
11
Multiple Choice
What is the missing partial product from the equation 3 x 245 = ?
150
15
8
2
12
Multiple Choice
What is the total product?
13
Multiple Select
What multiplication equation can be written using the model?
3 x 2,045
3 x 645
245 x 3
14
Fill in the Blanks
15
Fill in the Blanks
16
You just might be...
An area model pro!
Keep on working!!!
Standard:
4.NR.2.3- Solve relevant problems involving multiplication computation using rectangular arrays (bar models), an equation, or area model
Learning Target:
Today I am learning to solve problems involving the multiplication of a number with up to four digits by a 1-digit whole number or involving the multiplication of two two-digit numbers using strategies based on area models.
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