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Multiplication / Division

 

 

Multiplication

 

 

Learning to Multiply by 4s

Learning the 4s
 4 x 0 = 0  4 x 7 = 28
 4 x 1 = 4  4 x 8 = 32
 4 x 2 = 8  4 x 9 = 36
 4 x 3 = 12  4 x 10 = 40
 4 x 4 = 16  4 x 11 = 44
 4 x 5 = 20  4 x 12 = 48
 4 x 6 = 24  

 

A fun way to get the 4s time table is to skip count ...

0, 4, 8, 12, 16, 20, 24, 28, 32, 36 40, 44, 48

 

Be sure to practice skip counting backwards !

48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0

 

Give the answers, reading across the graph
 4 + 4 = ?  Two 4s = ?  2 x 4 = ?
 4 + 4 + 4 = ?  Three 4s = ?  3 x 4 = ?
 4 + 4 + 4 + 4 = ?  Four 4s = ?  4 x 4 = ?
 4 + 4 + 4 + 4 + 4 = ?  Five 4s = ?  5 x 4 = ?
 4 + 4 + 4 + 4 + 4 + 4 = ?  Six 4s = ?  6 x 4 = ?
 4 + 4 + 4 + 4 + 4 + 4 + 4 = ?  Seven 4s = ?  7 x 4 = ?

Give the answers, reading across the graph
 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = ?  Eight 4s = ?  4 x 8 = ?
 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = ?  Nine 4s = ?  4 x 9 = ?
 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = ?  Ten 4s = ?  4 x 10 = ?
 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = ?  Eleven 4s = ?  4 x 11 = ?
 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = ?  Twelve 4s = ?  4 x 12 = ?

Practice Problems

What is the cost of:
 three 4-cent buttons?  six 4-cent keys?
 ten 4-cent swans?  two 4-cent cups?
 five 4-cent eggs?  eleven 4-cent crayons?
 twelve 4-cent roses?  four 4-cent marbles?
 seven 4-cent toy snakes?  eight 4-cent candles?
 nine 4-cent caps?  one 4-cent apple?

See if you can give the answers quickly !
 4 x 0 = ?  4 x 3 = ?
 4 x 5 = ?  4 x 10 = ?
 4 x 11 = ?  4 x 12 = ?
 4 x 4 = ?  4 x 1 = ?
 4 x 2 = ?  4 x 6 = ?
 4 x 7 = ?  4 x 9 = ?
 4 x 8 = ?  4 x 12 = ?

What is the cost for:
 Four 12-cent toothpicks?  Four 9-cent cupcakes?
 Four 2-cent erasers?  Four 4-cent sticky buns?
 Four 10-cent pickles?  Four 5-cent tops?
 Four 3-cent buttons?  Four 7-cent pinwheels?
 Four 6-cent stickers?  Four 1-cent trading cards?
 Four 8-cent toy dogs?  Four 11-cent plums?

 

How many are fours 0s? Four 1s?  Four 2s?  Four 3s?  Four 4s?  Four 5s?  Four 6s?  Four 7s?  Four 8s?  Four 9s?  Four 10s?  Four 11s?  Four 12s?

 

4 pecks = 1 bushel
How many pecks in ..
 2 bushels?  2 x 4 = ?  6 bushels?  6 x 4 = ?
 10 bushels?  4 x 10 = ?  7 bushels?  7 x 4 = ?
 8 bushels?  8 x 4 = ?  5 bushels?  5 x 4 = ?
 4 bushels?  4 x 4 = ?  2 bushels?  2 x 4 = ?
 11 bushels?  11 x 4 = ?  3 bushels?  3 x 4 = ?
 9 bushels?  9 x 4 = ?  12 bushels?  12 x 4 = ?

 

 

Learning to Divide by 4s

 

Do you remember that the ÷ sign means divide?  When we see the ÷ sign we say divided by.  Division is a type of reversed multiplication. It just takes a wee bit of practice. (NOTE: 0 divided by any number equals 0)

 

Be sure to practice skip counting as it helps us to divide quickly ...

0, 4, 8, 12, 16, 20, 24, 28, 32, 36 40, 44, 48

Be sure to practice skip counting backwards !

48, 44, 40, 36, 32, 28, 24, 20, 16, 12, 8, 4, 0

 

5s Division Facts
 4 ÷ 0 = 0  28 ÷ 4 = 7
 4 ÷ 4 = 1  32 ÷ 4 = 8
 8 ÷ 4 = 2  36 ÷ 4 = 9
 12 ÷ 4 = 3  40 ÷ 4 = 10
 16 ÷ 4 = 4  44 ÷ 4 = 11
 20 ÷ 4 = 5  48 ÷ 4 = 12
 24 ÷ 4 = 6  

Practice Problems

Give the missing numbers
 4 ÷ 4 = ?  48 ÷ 4 = ?
 8 ÷ 4 = ?  28 ÷ 4 = ?
 32 ÷ 4 = ?  40 ÷ 4 = ?
 16 ÷ 4 = ?   0 ÷ 4 = ?
 40 ÷ 4 = ?  36 ÷ 4 = ?
 24 ÷ 4 = ?  12 ÷ 4 = ?
 44 ÷ 4 = ?  20 ÷ 4 = ?

Quickly give the answers working across the graph
 4 = ? 4s

4 = 4 x ? 
 4 ÷ 4 = ?
 12 = ? 4s

12 = 4 x ? 
 12 ÷ 4 = ?
 20 = ? 4s  20 = 4 x ?  20 ÷ 5 = ?
 16 = ? 4s

 16 = 4 x ?
 16 ÷ 4 = ?
 28 = ? 4s

 28 = 4 x ?
 28 ÷ 7 = ?
 40 = ? 4s

 40 = 4 x ?
 40 ÷ 4 = ?
 24 = ? 4s  24 = 4 x ?  24 ÷ 6 = ?
 36 = ? 4s

 36 = 4 x ?
  36 ÷ 4 = ?
 48 = ? 4s  48 = 4 x ?  48 ÷ 12 = ?
 8 = ? 4s  8 = 4 x ?  8 ÷ 4 = ?
 44 = ? 4s

 44 = 4 x ?
 44 ÷ 11 = ?

 

Elizabeth picked 48 wildflowers.  If she divided them equally among her four cousins, how many would each person receive?

There were 36 people in line to go on 4 rides.  How many folks were in each line?

There were 8 chocolate chip cookies in the jar.  Abigail shared them with four of her friends.  How many chocolate chip cookies did each person get?

 

4 quarts = 1 gallon
How many gallons are in ...
 16 quarts? 16 ÷ 4 = ?  12 quarts ?  12 ÷ 4 = ?
 8 quarts ?  8 ÷ 4 = ?  24 quarts ?  24 ÷ 4 = ?
 40 quarts ?  40 ÷ 4 = ?  48 quarts ?  48 ÷ 4 = ?
 32 quarts ?  32 ÷ 4 = ?  36 quarts ?  36 ÷ 4 = ?
 20 quarts?  20 ÷ 4 = ?  28 quarts ?  28 ÷ 4 = ?
 44 quarts ?  44 ÷ 4 = ?  24 quarts ?  24 ÷ 4 = ?

 

4s Fact Family

0
 0 x 4 = 0  4 ÷ 0 = 0
 4 x 0 = 0  0 ÷ 4 = 0

1,4
 4 x 1 = 4  4 ÷ 1 = 4
 1 x 4 = 4  4 ÷ 4 = 1

2,4,8
 4 x 2 = 8  8 ÷ 4 = 2
 2 x 4 = 8  8 ÷ 2 = 4

3,4,12
 4 x 3 = 12  12 ÷ 4 = 3
 3 x 4 = 12  12 ÷ 3 = 4

4,16
 4 x 4 = 16   16 ÷ 4 = 4

5,4,20
 4 x 5 = 20  20 ÷ 4 = 5 
 5 x 4 = 20  20 ÷ 5 = 4 

6,4,24
 4 x 6 = 24  24 ÷ 4 = 6
 6 x 4 = 24  24 ÷ 6 = 4

7,4,28
 4 x 7 = 28  28 ÷ 4 = 7
 7 x 4 = 28  28 ÷ 7 = 4

8,4,32
 4 x 8 = 32   32 ÷ 4 = 8
 8 x 4 = 32  32 ÷ 8 = 4

9,4,36
 4 x 9 = 36  36 ÷ 4 = 9
 9 x 4 = 36  36 ÷ 9 = 4

10,4,40
 4 x 10 = 40  40 ÷ 4 = 10 
 10 x 4 = 40  40 ÷ 10 = 4

11,4,44
 4 x 11 = 44  44 ÷ 4 = 11
 11 x 4 = 44  44 ÷ 11 = 4

12,4,48
 4 x 12 = 48  48 ÷ 4 = 12
 12 x 4 = 48  48 ÷ 12 = 4

 

When one thing or a number of things is divided into four equal parts, each part is called one fourth or one quarter.  Ask your parents to show you a quarter.  This coin is called a quarter because it takes four quarters to make a dollar.  One fourth is written 1/4.  We can find 1/4 of any number by dividing the number by 4.

 

What is:
 1/4 of 4?  4 ÷ 4 = ?
 1/4 of 8?  8 ÷ 4 = ?
 1/4 of 12?  12 ÷ 4 = ?
 1/4 of 16?  16 ÷ 4 = ?
 1/4 of 20?  20 ÷ 4 = ?
 1/4 of 24?  24 ÷ 4 = ?
 1/4 of 28?  28 ÷ 4 = ?
 1/4 of 32?  32 ÷ 4 = ?
 1/4 of 36?  36 ÷ 4 = ?
 1/4 of 40?  40 ÷ 4 = ?
 1/4 of 44?  44 ÷ 4 = ?
 1/4 of 48?  48 ÷ 4 = ?

What is ...
 1/4 of 8 donuts?  1/4 of 16 hotdogs?
 1/4 of 24 dollars?  1/4 of 4 horses?
 1/4 of 32 mugs?  1/4 of 44 cars?
 1/4 of 12 lambs?  1/4 of 20 trees?
 1/4 of 40 cookies?  1/4 of 36 trucks?
 1/4 of 48 flowers?  1/4 of 28 cents?

What is ...
(Hint: Do multiplication first then the addition)
 4 x 2 + 1 ?  4 x 8 + 2 ?
 4 x 4 + 3 ?  4 x 3 + 4 ?
 4 x 12 + 1  4 x 5 + 1 ?
 4 x 1 + 4 ?  4 x 10 + 3 ?
 4 x 7 + 1 ?  4 x 11 + 2 ?
 4 x 10 + 1 ?  4 x 6 + 2 ?
 4 x 9 + 3 ?  4 x 0 + 5 ?

 

Before you go on to the 6s times tables, be sure to ...

 

1)  Review your skip counting for all the times tables you have done so far
... frontwards and backwards

2) Have your daddy, mama, sister, or brother flash
you all the multiplication/division facts you have learned.
See how fast and accurate you can be !

3) complete the Multiplication Chart for
what you already know !

 


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