CONFIDENTIAL 1

Today we will discuss about the topic: Factors and multiples – multiplication facts

Good Afternoon!

Let’s Warm up:.

1) 93 + 54 = 2) Round 2,456 to the nearest tens

place.

3) Write 654 in word form.

4) 67 – 43 =

5) What is the next number in the pattern?3, 7, 11, 15,

1) 147

2) 2,460

3) Six hundred fifty four

4) 24

5) 19

CONFIDENTIAL 2

PLACE VALUE helps you better understand the WHOLE NUMBERS (0,1,2,3,4,5,6,7,8,9,.....)

We can write numbers in three forms:

We compare numbers using PLACE VALUE.

Many times there are more than 2 numbers that we want to compare. We can "ORDER" the numbers by placing them in an order from

least to greatest OR greatest to least

Let’s discuss what we did in the last few sessions.

STANDARD FORM: 423 WORD FORM: Four hundred twenty-three EXPANDED FORM: 400 + 20 + 3

REVIEW

CONFIDENTIAL 3

When we ESTIMATE, we find a number that is close to the exact number.

ROUNDING is one of the ways we estimate.

The middle number is called the MEDIAN

45, 48, , 69, 74

SET of data

52,

MEDIAN

REVIEW

CONFIDENTIAL 4

There are several properties of addition

COMMUTATIVE PROPERTY:

ASSOCIATIVE PROPERTY:

IDENTITY PROPERTY:

We can change the order and the sum stays the same.

EXAMPLE: 4 + 6 = 106 + 4 = 10

We can change the grouping and the sum stays the same.

EXAMPLE: 2 + (3+ 8) = 13 (2 + 3)+ 8= 13

We can add zero and the sum stays the same.

EXAMPLE: 7 +0 = 7

REVIEW

CONFIDENTIAL 5

Addition and Subtraction are INVERSE OPERATIONS

If we subtract 0 from any number, the difference is that same number.

If we subtract a number from itself, the difference is 0.

13 - 0 = 13

57 - 57 = 0

REVIEW

CONFIDENTIAL 6

Let’s learn few terms before we proceed!

4 x 5 = 20

Factor: Number that is multiplied to give a product.

Product: Number that is obtained by multiplying numbers.

Product

Factor

CONFIDENTIAL 7

There are 3 rows. Each row has 2 stars.

2 stars Three times two stars is six stars. 2 + 2 + 2 = 6

2 stars

2 stars

+

+

STEP 1 :

Find: 2 x 3

CONFIDENTIAL 8

Here we have 2 rows and each row has 3 stars.

3 stars

3 stars

Two times three stars is six stars.

That is 3+ 3 = 6.Hence, the result.

Similarly, we can rearrange the stars in the following manner also.

+

STEP 2 :

CONFIDENTIAL 9

We can show this by a multiplication equation.

2 x 3 = 6

ProductFactor Factor

STEP 3 :

Multiplication by a whole number is REPEATED ADDITION

CONFIDENTIAL 10

There are five groups and each group has four triangles.

Can you tell how many triangles are there in all?

Now here is something for you to do.

4 + 4 + 4 + 4 + 4= 5 x 4 = 20

CONFIDENTIAL 11

There are several properties of multiplication.

1) COMMUTATIVE PROPERTY:We can change the order of the factors and the product stays the

same.EXAMPLE: 4 x 3 = 12

3 x 4 = 12

2) IDENTITY PROPERTY:We can multiply a number by 1 and the product is the

number. EXAMPLE: 3 x 1 = 3

3) ZERO PROPERTY:

We can multiply a number by 0 and the product is zero.

EXAMPLE: 7 x 0 = 0

CONFIDENTIAL 12

Uses of the properties of multiplication.

1) COMMUTATIVE PROPERTY:

The order of the factors does not affect the product.

4 groups of 3 cans = 12 cans

3 groups of 4 cans = 12 cans

The number of cans remain the same.

4 x 3 =12

3 x 4 =12

CONFIDENTIAL 13

2) IDENTITY PROPERTY:

The product of 1 and a number is the number.

1 row of 5 cans = 5 cans.

5 x 1 =5

CONFIDENTIAL 14

3) ZERO PROPERTY:

The product of 0 and any number is 0.

0 rows of 5 cans = 0 cans.

5 x 0 =0

CONFIDENTIAL 15

Complete each problem using the COMMUTATIVE PROPERTY.

"Change the Order"

6 x 3 = x

2 x 5 = x

3 x 6

5 x 2

CONFIDENTIAL 16

Complete each problem using the IDENTITY PROPERTY.

6 x 1 =

5 x 1 =

6

5

CONFIDENTIAL 17

Complete each problem using the ZERO PROPERTY.

0 x 3 =

6 x 0 =

0

0

CONFIDENTIAL 18

BREAK

CONFIDENTIAL 19

GAMEClick on the link below for some exciting

puzzle

http://www.thekidzpage.com/onlinejigsawpuzzles/jigsaw-puzzles/12-piece-jigsaw/bananapuzzle.html

CONFIDENTIAL 20

Find the product with the help of model.

1) 2 x 2 =

2) 7 x 3 =

3) 4 x 1 =

4) 6 x 5 =

1) 4

2) 21

3) 4

4) 30

CONFIDENTIAL 21

5) Sam Reads 5 pages in one day. How many pages does he reads in 5 days?

5) 25

CONFIDENTIAL 22

6) There are 3 balls in a can of tennis balls. Write a multiplication sentence to show how many balls are in 4 cans.

7) Tyler wants to put 5 rows of 3 robot stickers on each page of his sticker album. Write a multiplication sentence to describe how each page will look.

6) 3 x 4 = 12 balls

7) 5 x 3 = 15 robot stickers

CONFIDENTIAL 23

8) Lucy has 8 pencils each of green, blue and red colors. How many pencil does she have in all?

9) Kayla is using beads to make 4 bracelets. She puts 8 beads on each bracelet. How many beads

does she use?

8) 24

9) 32 beads

CONFIDENTIAL 24

10) Yoshi is putting beads on his Temari ball. He makes 3 rows with 7 beads in each. What other way can he put the beads in equal groups and still have

21 beads?10) 7 rows of 3

beads

CONFIDENTIAL 25

Very Good!Let's Review

Factor: Number that is multiplied to give a product.

Product: Number that is obtained by multiplying numbers.

Multiplication by a whole number is REPEATED ADDITION

CONFIDENTIAL 26

There are several properties of multiplication.

1) COMMUTATIVE PROPERTY:We can change the order of the factors and the product stays the

same.EXAMPLE: 4 x 3 = 12

3 x 4 = 12

2) IDENTITY PROPERTY:We can multiply a number by 1 and the product is the

number. EXAMPLE: 3 x 1 = 3

3) ZERO PROPERTY:

We can multiply a number by 0 and the product is zero.

EXAMPLE: 7 x 0 = 0

CONFIDENTIAL 27

Very well done.See you in the next session.