1. Lesson 1: Monday
Multiplication
Kristine Lynch
MA.3.A.1.1

2. Times Tables Pre-test
worksheet

3. Cookie Math! Repeated Addition The symbol x means multiplication.
Multiplication means to have many groups of the same size.

4. Example 1:
There are five groups, and each group has two elephants.
5 × 2 = 10
             
             
             
             
             
How many
groups
How many
in each group
We can solve it by adding
x = = 10
five
times
Two
elephants is
ten elephants

5. There are three groups, and each group has four dogs.
Example 2:
There are three groups, and each group has four dogs.
3 × 4 = 12
how many  groups
how many in each group 3 × 4
   =    
= 12
three
times
four dogs is
twelve dogs
We can solve it by adding.

6.  Any number multiplied by ZERO is ZERO!
Zeros
 Any number multiplied by ZERO is ZERO!
0 cookies, each having 2 chocolate chips, equal 0 chocolate chips
0 x 0 = 0
0 x 1 = 0
0 x 2 = 0
0 x 3 = 0
0 x 4 = 0
0 x 5 = 0
0 x 6 = 0
0 x 7 = 0
0 x 8 = 0
0 x 9 = 0
1 x 0 = 0
2 x 0 = 0
3 x 0 = 0
4 x 0 = 0
5 x 0 = 0
6 x 0 = 0
7 x 0 = 0
8 x 0 = 0
9 x 0 = 0

7. Ones  Any number multiplied by ONE is itself!
1 cookie having 4 chocolate chips, equals 4 chocolate chip
1 x 0 = 0
1 x 1 = 1
1 x 2 = 2
1 x 3 = 3
1 x 4 = 4
1 x 5 = 5
1 x 6 = 6
1 x 7 = 7
1 x 8 = 8
1 x 9 = 9

8. Twos
2 x 5 = 10
2 cookies, each having 5 chocolate chips, equal 10 chocolate chips
2 x 3 = 6
2 cookies, each having 3 chocolate chips, equal 6 chocolate chips
 remember the TWOs is doubling
 5 doubled is 10 (5 + 5 = 10)

9. Threes 5 +
3 x 5 = 15
3 cookies, each having 5 chocolate chips, equal 15 chocolate chips
Skip Counting (by 3's)
 Skip counting is counting while skipping one or more numbers. To skip count by 3's, skip two numbers while counting.  ( )  Many refer to this a "counting by 3's
3 x 5 is skip counting five times or and you are at the answer

10. Fours 6 +
4 x 6 = 24
4 cookies, each having 6 chocolate chips, equal 24 chocolate chips
Double-Double
 Double-double the number you are multiplying four by.  (Double it twice)
4 x 6 (Double 6 Twice)
6 doubled once is 12, 12 doubled is 24
 Another way to figure the answer is double the answer you would get if you multiplied the number by 2.
6 x 2 = 12
12 x 2 = 24

11. 5 cookies, each having 6 chocolate chips, equal 30 chocolate chips
Fives 6 +
5 x 6 = 30
5 cookies, each having 6 chocolate chips, equal 30 chocolate chips
Skip Counting (by 5's)
 To skip count by 5's, skip 4 numbers while counting.  ( )  Many refer to this a "counting by 5's
5 x 6 is skip counting six times or and you are at the answer

12. 6 cookies, each having 5 chocolate chips, equal 30 chocolate chips
Sixes 5 +
6 x 5 = 30
6 cookies, each having 5 chocolate chips, equal 30 chocolate chips
 There is no easy trick to remember the sixes, this is why it is important to memorize your times tables.

13. Sevens 8 +
7 x 8 = 56
7 cookies, each having 8 chocolate chips, equal 56 chocolate chips
 There is no easy trick to remember the sevens.

14. Eights 6 +
8 x 6 = 48
8 cookies, each having 6 chocolate chips, equal 48 chocolate chips
 There is no easy trick to remember the eights.

15. Nines 6 +
9 x 6 = 54
6 cookies, each having 9 chocolate chips, equal 54 chocolate chips
 Using Your Fingers - 9 x 6 = 54
Step 2:
Your fingers represent the numbers 1 through 10.
Step 1:
Put your hands on the table in front of you.
Step 3: 
- Each finger to the left of the curled finger represents 10.    - Say 10, 20, 30, 40, 50  - Each finger to the right of the curled finger represents one.     - Count 1, 2, 3, 4.  (Or 51, 52, 53, 54)   - 6 x 9 = 54

16. Questions?