3.OA.1

​HAPPY MONDAY


August 14th-August 18th

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​ STANDARDS

​3.OA.1

Interpret 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

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3.OA.7

​Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all products of two one-digit numbers

First we are going to work on 2's.

​ https://youtu.be/6RHvIUry_uc

Go to blooket.com

Academic Vocabulary

​equal groups- groups that have the same number of objects.

multiplication- means "equal groups"

factor- The numbers you multiply

product- The result is the product.

array-set of objects arranged in equal rows.

equation- A number sentence with an equal sign.

repeated addition- to add equal groups or the same number over and over​

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​FACTOR

​REPEATED ADDITION

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​ Multiplication strategies

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Let's Practice these problems

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Draw

Multiplication Strategies

​Now let's look back over the academic vocabulary

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Multiple Choice

The answer to a multiplication problem is called the ___________________.

• product

• factor

• multiple

• sum

Multiple Choice

An operation that gives the total number when you join EQUAL GROUPS is called ____________________.

• addition

• subtraction

• multiplication

• division

Multiple Choice

The numbers that are being multiplied are called __________________.

3 x 8 = 24, 3 and 8 are the _______________.

• products

• factors

• multiples

• rounding

Multiple Choice

Objects in equal rows and columns form an ___________.

• factor

• product

• array

• fact family

Multiple Choice

Adding the same number again and again is called

_____________ _______________.

• repeated subtraction

• repeated division

• repeated multiplication

• repeated addition

Multiple Choice

Groups that have the same value, same size, or same amount are in ________________.

• equal parts

• equal factors

• equal groups

• equal families

​Now let's practice what we have learned.

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Multiple Choice

Select the correct number model with the rectangular array

• 4+4+4+4=16

• 2+2+2+2=8

• 2+2=4

• 4+4=8

Multiple Choice

Select the correct number model with the rectangular array

• 4+4+4+4=16
• 2+2+2+2=8
• 5+5+5+5=20
• 3+3+3+3=12

Multiple Choice

There are 5 tables in the lunchroom. 4 people can sit at each table. How many people can sit at all 5 tables?

• 25

• 16

• 20

• 14

Multiple Choice

I had 3 bunches of flowers with 4 flowers in each bunch. How many flowers do I have in all.

• 3

• 9

• 15

• 12

Multiple Select

hat is the repeated addition sentence for this array? ( There may be more than one answer!)

• 4 + 4 = 8

• 2 + 2 + 2 = 6

• 1 + 1 = 2

• 3 + 3 = 6

Multiple Select

What is the repeated addition sentence for this array? (There may be more than one answer!)

• 3 + 3 + 3 + 3 = 12

• 4 + 4 + 4 = 12

• 6 + 6 = 12

• 5 + 5 + 5 = 15

Multiple Choice

What is this array in repeat addition?

• 5 + 5 + 5

• 3 + 3 + 3 + 3 + 3

• Both are correct.

Multiple Choice

Look at the picture and select the correct answer.

• There are 2 equal groups of 10

• There are 5 equal groups of 4

• There are 4 equal groups of 5

Multiple Choice

What is another way of saying 6 + 6 + 6?

• 3 groups of 6
• 3 groups of 3

Multiple Choice

Select the answer that has the correct work shown and label to answer the following question:

Andrew is making mini sandwiches for his party. If he has 4 friends coming over and he made 3 sandwiches total for each one of them, how many sandwiches did he make in total.

• 4 X 3 = 12 sandwiches

• 4 x 3 = 12

• 12 sandwiches

• 4 x 3 = 13 sandwiches

Multiple Choice

A mathematical statement that uses an equal sign (=) to show that two expressions have the same value is called a(n) ______________.

• equation

• expression

Multiple Choice

What multiplication equation matches the cookie array?

• 4 + 4 + 4 =12
• 3 x 4 =12
• 3 x 4 = 16
• 4 x 4= 16

Multiple Choice

• 2x6
• 1x6
• 6x2
• 2x4

Multiple Choice

Riley has a collection of marbles.  He puts the marbles in 2 equal groups.  There are 6 marbles in each group.  How many marbles does Riley have in all?

• 8
• 36
• 12
• 4

Multiple Choice

What multiplication expression is being described here?

• 3 x 4

• 4 x 3

• 3 x 3

• 1 x 3

Multiple Choice

What multiplication expression is the numberline showing?

• 6 x 6

• 9 x 9

• 9 x 6

• 54

Multiple Choice

Rick was doing his math homework.

Rick wrote:

2 + 2 + 2 +2

Which is another way to show what Rick wrote?

• 2 x 2

• 5 x 2

• 2 + 4

• 2 x 4

Multiple Choice

There are 3 dogs walking down the street. Each dog has 4 legs. How many total legs?

• 7
• 10
• 12
• 27

Draw

Draw an array to the following problem 8X4

Draw

Draw equal groups to the equation 6X7