Group MultiplicationHow to Multiply with Grouping

4

Mr. Darrion J Stigger

3 x

Content: MathematicsGrade Level: 3rd GradeSummary: The purpose of this PowerPoint is to introduce the mathematical topic Group Multiplication.Learning Objective: The learner will represent and solve problems involving multiplication through grouping with 100% accuracy.Content Standard: Represent and solve problems involving multiplication:

CCSS.Math.Content.3.OA.A.1Interpret products of whole numbers, e.g., interpret 5 × 7 as the total

number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.

Accomplishment: Develop a another system of how to understand multiplication.

Let’s Review How We Multiply

4 2x = 8

x=

You will add this number

The number of timesAddition

Add it all up and you

will have the answerLet’s Show

It!

4 2x

4 + 4

8Write 4

twice usingaddition

Example

You Try

3 x 3=

3 3 33 3 3

6 9 0 18

SORRY

TRY AGAIN

Go Back to Problem

View Example

TRY ANOTHER EXAMPLE

Try Another

4 x 3=3 3 33 3 34 4 44 4 4 7 1 -112

SORRY

TRY AGAIN Go Back to

Problem

Videos on Group Multiplication

VIDEO 1 VIDEO 2

x=

Multiplication Group SentencesCLICK

Multiplication Group SentencesMathematical Sentence - an equation

Let’s Create Sentences

DONEERASE

Solve using group multiplication

3 x 6=

9 18-3 2

SORRY

TRY AGAIN Go Back to

Problem

TRY ANOTHER

Solve using group multiplication

There are how many buckets altogether?

12141115

SORRY

TRY AGAIN Go Back to

Problem

TRY ANOTHER

Solve using group multiplication

There are 7 children. Each child has 5 water balloons in their bucket, how many water balloons are there in all?

3012352

SORRY

TRY AGAIN Go Back to

Problem

Let’s Play A Grouping Game

Multiplication Picnic

or

Repetitive Addition (Multiplication)

ConclusionWe have introduced multiplying by grouping (group multiplication) and

showing how to write group multiplication sentences. Keep

practicing and multiplying will become easier.