Transcript INTRODUCTION TO MULTIPLICATION

INTRODUCTION TO
MULTIPLICATION
READY
SET
LEARN!!!
TODAY YOU WILL
LEARN HOW TO USE
REPEATED ADDITION
AND DRAW AN ARRAY TO
DO MULTIPLICATION
VOCABULARY



MULTIPLICATION- A quick way to
add the same quantity many times
FACTORS- The numbers that are
multiplied together. EX. 5x2=10 5 and 2
are the factors.
PRODUCT- The answer in
multiplication.
EX. 5 x 2 = 10 10 is the product
PROBLEM
This morning at the breakfast table, there were
5 plates. There were 3 muffins on each plate.
What was the total number of muffins on the
plates?
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Discuss- How would you solve this problem?
REPEATED ADDITION
This morning at the breakfast table, there were
5 plates. There were 3 muffins on each plate.
What was the total number of muffins on the
plates?
 One way to solve this problem is by using
repeated addition.
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3 + 3 + 3 + 3 + 3 = 15
MAKE AN ARRAY
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You can also make an array.
An array is made of rows of objects, with the
same number of objects in each row.
3 rows of 5 or 3+3+3+3+3 or 3 x 5
AN EQUAL GROUPS MODEL

You can also draw out a model by drawing out
equal groups
Let’s Try Another Problem
Bill has 4 pencil boxes. Each pencil box holds
2 pencils. What is Bill’s total number of
pencils?
 Since there are 4 groups of 2, we can use
repeated addition, an array, or mulitplication to
solve.

2+2+2+2 = 8
OR 2 x 4 = 8
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NOW YOU TRY!!!

Max had 6 bags of groceries. Each bag had 3 cans of
vegetables. How many cans of vegetables did Max
have?

Please show 3 different ways to solve
1) Repeated Addition
2) Draw and array
3) Multiplication sentence
Let’s go to the next page to check your answers!
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Max had 6 bags of groceries. Each bag had 3
cans of vegetables. How many cans of vegetables
did Max have?
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3 + 3 + 3 + 3 + 3 + 3= 18
3 x 6 = 18
VOCABULARY REVIEW

MULTIPLICATION - A quick way to add the
same quantity many times.

FACTORS- The numbers that are multiplied
together. Ex. 4 x 3 =12 4 and 3 are factors

PRODUCT - The answer in multiplication.
4 x 3 = 12 12 is the product