Chapter 11  Multiplication Facts 0-5

• to use skip counting
• to relate multiplication to repeated addition
• Order Property of Multiplication
• to use tables to find products for factors 0-5

Making Equal Groups

 3 + 3 + 3 + 3 = 12

addend + addend + addend + addend = product

  4 groups of 3 = 12

  factor x factor = product

   4  x  3 =  12

If groups are equal, then you can add to find the sum or you can multiply to find the product.  

   4 + 4 + 4 + 4 + 4 = 20

addend + addend + addend + addend + addend = product

 you can add equal groups to find the sum

or you can multiply equal groups

 5 groups of 4  =  20

 5  x  4  =  20

factor x factor equals the product

Addition and Multiplication are related

Draw a Picture ...   Problem Solving Strategy

You can draw a picture to help you solve a problem.  Here's how...

Mrs. Smith knitting  a sweater for  each of her three children.  Each sweater needs 5 buttons.  How many buttons will Mrs. Smith need to buy at the store to finish the sweaters?

Draw a circle to represent each of her children.  Hint... she has tree children, so you should of draw 3 circles.

                O  O  O

Now draw five dots in each of the circles to represent the buttons needed to finish the sweaters.

Count all the dots 1,2,3,4,5 ...... 6, 7, 8, 9, 10 ......  11,12, 13, 14, 15  

3 x 5 = 15 buttons  (always label answers)

Order Property of Multiplication

        You can arrange the factors (numbers) in any order and the product is the same.

• 5 x 2 = 10
• 2 x 5 = 10

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Number line can be used to skip count;

6 x 2 =           (starting at zero take six steps of two)

The Zero Property of Multiplication  any factor multiplied by a zero has a product of zero.

• 0 x 4 = 0
• 9 x 0 = 0
• 10  x 0 = 0
• 0 x 88 = 0

The One Property of Multiplication states that any factor multiplied by one has a product of itself.

• 1 x 5 = 5
• 8 x 1 = 8
• 32  x 1 = 32

Hint to Master the 4's     4 = 2 + 2

                So 4 x 6 = _______  or    (2 x 6) +  (2 x 6)

Assessment;

Do you know these words?

Vocabulary;

1. factor
2. product
3. Order Property

Can draw a picture to solve this problem?

            2  x  6 = _____

Can you write an addition sentence and multiplication sentence for this picture?

Can you use a number line to skip-count to solve this problem?

     0  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30 

    4  x  6  =  ______

Can you draw a picture to solve this problem  ?

Susie has 5 library books on each shelf in her room.  How many library books does she have on her shelves?

Do you know your basic multiplication facts for 0 - 5 factors?