3.NBT.A.3

Multiply one-digit whole numbers by multiples of 10 in the range 10–90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations.

 
9 Lesson(s)
   

The Video Game Model of Adding

3rd Grade Math » Unit: Multiplication
3rd Grade Math » Unit: Multiplication
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Video games often dole out points in groups of 25, 50 and 100 because they are easy numbers to multiply. Practice with patterns of 5 and 10 apply directly to understanding patterns with 50 and 100.

 
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Resources (17)
 
Reflections (2)
screen shot 2014 03 06 at 1 56 36 pm
   

The Multiplication and Division Connection

3rd Grade Math » Unit: Sharing Equally with Division
3rd Grade Math » Unit: Sharing Equally with Division
Sarah Maffei
Environment: Urban
 
Big Idea:

Students can solve multiplication and division problems quickly by recognizing the relationship between the two operations.

 
Favorites (18)
 
Resources (11)
 
Reflections (1)
student presentation
   

Big Groups and Big Products

3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
Sarah Maffei
Environment: Urban
 
Big Idea:

Big groups and big products can be broken apart into smaller groups of tens and ones to make it easier to multiply and find the product

 
Favorites (10)
 
Resources (15)
 
Reflections (1)
multiplication
   

Tell Me A 2 by 1 Digit Multiplication Story (Lesson 1 of 2)

3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
Sarah Maffei
Environment: Urban
 
Big Idea:

Students use two numbers to create a multiplication word problem, demonstrating the solution using a visual model matching their strategy choice (equal groups, arrays or repeated addition).

 
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Resources (13)
 
Reflections (2)
2by1 2
   

Tell Me a 2 by 1 Digit Multiplication Story (Lesson 2 of 2)

3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
3rd Grade Math » Unit: 2-Digit by 1-Digit Multiplication
Sarah Maffei
Environment: Urban
 
Big Idea:

Students use two numbers to create a multiplication word problem, demonstrating the solution using a visual model matching their strategy choice (equal groups, arrays or repeated addition).

 
Favorites (3)
 
Resources (8)
 
Reflections (1)
student presentation
   

Fundraiser Finance (Pickles for a Profit)

3rd Grade Math » Unit: Solving Mult-Step Word Problems Using the Four Operations
3rd Grade Math » Unit: Solving Mult-Step Word Problems Using the Four Operations
Jennifer Valentine
Tucson, AZ
Environment: Urban
 
Big Idea:

Engaging students in analyzing the cost-benefit of selling different food items at a fundraiser provides real-world, two-step word problems!

 
Favorites (6)
 
Resources (17)
 
Reflections (1)
chips
   

Using Mental Math to Multiply 2-Digit Numbers (Are You My Match?)

4th Grade Math » Unit: Multiplying and Dividing
4th Grade Math » Unit: Multiplying and Dividing
Rose Monroe
Memphis, TN
Environment: Urban
 
Big Idea:

Basic facts and place-value patterns can be used to mentally multiply a two-digit number by a power of 10.

Standards:
 
Favorites (4)
 
Resources (16)
 
Reflections (1)
mental math
   

Plan A Party! (Day 1)

3rd Grade Math » Unit: Math in the Real World
3rd Grade Math » Unit: Math in the Real World
Sarah Maffei
Environment: Urban
 
Big Idea:

Math in context makes much more sense

 
Favorites (4)
 
Resources (13)
 
Reflections (1)
screen shot 2014 07 02 at 8 47 33 pm
   

Plan a Party! (Day 2)

3rd Grade Math » Unit: Math in the Real World
3rd Grade Math » Unit: Math in the Real World
Sarah Maffei
Environment: Urban
 
Big Idea:

Math in context makes much more sense.

 
Favorites (1)
 
Resources (12)
 
Reflections (1)
images
Common Core Math
 
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