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Multiplication as Repeated Addition, Arrarys and Tables, WOrd Problems and Multistep

Amanda Tullis

on 27 January 2013

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Transcript of Multiplication

How would you solve
Using today's Method? Array Writing Multiplication
Stories Multiplication Strategies Multiplication as
Repeated Addition An array shows objects in equal rows.
To find out how many items: add or multiply. Example 1: When there are equal groups, you can use addition to solve the multiplication problem 2 + 2 + 2 = 6 socks 3 X 2 = 6 How many petals altogether? factor factor product 5 x 5 = 25 In Your Math Journal: 5 groups of 2 Draw 4 groups of 5 3 groups of 3 2 x 6 = 12 number
of rows number in
each row How many cookies have
just finished baking? How many colors of paint
are in this water color set? ***
*** ****
**** 3 rows
4 in each row 4 rows
3 in each row 4+4+4=12
3x4=12 3+3+3+3=12
4x3=12 Commutative Property of Multiplication In Your Math Journal: Draw: 5 x 3 6 x 4 2 x 5 Example 2: A girl had 4 cats. Her cats liked to run, jump, and play with toys. The girl bought 3 toys for each cat. How many toys did she buy? Ron Rabbit planted 3 rows of carrots in his garden. He planted 3 carrots in each row. How many carrots did Ron plant. What clues or key words tell you that these are both examples of multiplication stories? Write a word problem for 6 X 2
in your math journal. Draw a
picture to go along with it. (Write in complete sentences and be ready to share. Show some creativity!)
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