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Transcript of Multiplication
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
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!)