DIVISION STRATEGIES MAFS.3.OA.3.7

LESSON OPENING Solve for the variable in each equation: 1)8 × m = 32 2)18 ÷ j = 9 3)p × 7 = 21 4)17 – f = 11

DIVISION STRATEGIES In Unit 3, Understand Division, we used different strategies to divide. Do you remember any of the strategies? Use a number line

LET’S REVIEW THESE STRATEGIES DO YOU REMEMBER THESE?

You will make this foldable as we go through the PowerPoint today!

DRAW GROUPS Ms. Percy has 12 pencils. She wants to give 3 students an equal number of pencils. How many pencils will each student get?

DRAW GROUPS Ms. Percy has 12 pencils. She wants to give 3 students an equal number of pencils. How many pencils will each student get?

DRAW GROUPS Ms. Percy has 12 pencils. She wants to give 3 students an equal number of pencils. How many pencils will each student get?

DRAW GROUPS Ms. Percy has 12 pencils. She wants to give 3 students an equal number of pencils. How many pencils will each student get? Each student will get 4 pencils.

DRAW GROUPS Ms. Percy has 12 pencils. She wants to give 3 students an equal number of pencils. How many pencils will each student get? Each student will get 4 pencils. When it asks, how many will EACH get, it is the same as asking how many will ONE GROUP get! 12 (pencils) ÷ 3 (students) = 4 (pencils each student gets)

MAKE YOUR FOLDABLE / INTERACTIVE NOTEBOOK DRAW GROUPS

MAKE GROUPS Mrs. Andersen has 15 tacos. She wants to put 3 tacos on each plate. How many plates will Ms. Andersen need for all of her tacos to be on a plate? I can draw circles around every 3 tacos. Then I count all the groups I made.

MAKE GROUPS Mrs. Andersen has 15 tacos. She wants to put 3 tacos on each plate. How many plates will Ms. Andersen need for all of her tacos to be on a plate? I can draw circles around every 3 tacos. Then I count all the groups I made.

MAKE GROUPS Mrs. Andersen has 15 tacos. She wants to put 3 tacos on each plate. How many plates will Ms. Andersen need for all of her tacos to be on a plate? I can draw circles around every 3 tacos. Then I count all the groups I made.

MAKE GROUPS Mrs. Andersen has 15 tacos. She wants to put 3 tacos on each plate. How many plates will Ms. Andersen need for all of her tacos to be on a plate? I can draw circles around every 3 tacos. Then I count all the groups I made.

MAKE GROUPS Mrs. Andersen has 15 tacos. She wants to put 3 tacos on each plate. How many plates will Ms. Andersen need for all of her tacos to be on a plate? I can draw circles around every 3 tacos. Then I count all the groups I made.

MAKE GROUPS Mrs. Andersen has 15 tacos. She wants to put 3 tacos on each plate. How many plates will Ms. Andersen need for all of her tacos to be on a plate? So, Ms. Andersen will need 5 plates.

MAKE YOUR FOLDABLE / INTERACTIVE NOTEBOOK MAKE GROUPS

USE A NUMBER LINE Pedro has 15 books he wants to put equally on bookshelves. He has 3 bookshelves. How many books can go on each shelf?

USE A NUMBER LINE Pedro has 15 books he wants to put equally on bookshelves. He has 3 bookshelves. How many books can go on each shelf? Pedro can put 5 books on each shelf. The number line shows 15 ÷ 3 = 5

MAKE YOUR FOLDABLE / INTERACTIVE NOTEBOOK USE A NUMBER LINE

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? Make an array. Get out 24 tiles. Start to arrange them in 3 rows. MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? MAKE AN ARRAY

Christine wants to plant vegetables. She has 24 vegetables and wants to put them in 3 rows. How many vegetables will go in each row? Since there are 8 tiles in each row there will be 8 vegetables in each row. 3 8 MAKE AN ARRAY

MAKE YOUR FOLDABLE / INTERACTIVE NOTEBOOK MAKE AN ARRAY

REPEATED SUBTRACTION Chris has $12 for the book fair. Each book he wants to buy cost $4. How many books can Chris buy? Chris buys one book, spends $4, and has $8 left. Can he buy another book? $4

REPEATED SUBTRACTION Chris has $12 for the book fair. Each book he wants to buy cost $4. How many books can Chris buy? Chris buys another book, spends another $4, and has $4 left. Can he buy another book? $4

REPEATED SUBTRACTION Chris has $12 for the book fair. Each book he wants to buy cost $4. How many books can Chris buy? Chris buys another book, spends another $4, and has $0 left. Can he buy another book? $4

REPEATED SUBTRACTION Chris has $12 for the book fair. Each book he wants to buy cost $4. How many books can Chris buy? Chris spent $4 three times. He subtracted $4 three times. So, 12 ÷ 4 = 3. He can buy 3 books $4

MAKE YOUR FOLDABLE / INTERACTIVE NOTEBOOK REPEATED SUBTRACTION

THINK MULTIPLICATION 20 ÷ 4 = __ Let’s use multiplication to help us.

THINK MULTIPLICATION 20 ÷ 4 = __ Let’s use multiplication to help us. is the same thing as 4 x ____ = 20

THINK MULTIPLICATION 20 ÷ 4 = __ I know that 4 × 5 = 20, so 20 ÷ 4 is equal to 5. is the same thing as 4 × ____ = 20

MAKE YOUR FOLDABLE / INTERACTIVE NOTEBOOK THINK MULTIPLICATION

Now you’ve reviewed all the division strategies. WHAT IS THE MOST EFFICIENT STRATEGY? WHY?

Now you’ve reviewed all the division strategies. WHAT IS THE STRATEGY YOU WANT TO USE MOST OFTEN?

EXIT TICKET 1)Use a strategy you reviewed today to solve for m: m = 72 ÷ 8 2) Tito has 36 tomato plants in his garden. His garden is organized with the same number of tomato plants in each row. If he has 4 plants in each row, how many rows are in Tito’s garden?