5 Minute Check 1. David baked 78 cookies for a bake sale. He set aside 12 cookies to share with volunteers. The remaining cookies are bagged with 3 cookies in each bag. How many bags does he have? 2. A 3 lb. pork loin can be cut into 10 pork chops of equal weight. How many ounces are in each pork chop? 3. One of the largest pumpkins ever grown weighed about ¾ ton. About how many pounds did the pumpkin weigh? 4. A 40 foot power boat is for sale by owner. How long is the boat to the nearest yard?
5 Minute Check 1. David baked 78 cookies for a bake sale. He set aside 12 cookies to share with volunteers. The remaining cookies are bagged with 3 cookies in each bag. How many bags does he have?
5 Minute Check David baked 78 cookies for a bake sale. He set aside 12 cookies to share with volunteers. The remaining cookies are bagged with 3 cookies in each bag. How many bags does he have? 78 – 12 = 66 66 ÷ 3 = 22 bags
5 Minute Check 2. A 3 lb. pork loin can be cut into 10 pork chops of equal weight. How many ounces are in each pork chop?
5 Minute Check 2. A 3 lb. pork loin can be cut into 10 pork chops of equal weight. How many ounces are in each pork chop? 3 lb = 48 ounces 4 48 ounces ÷ 10 = 4 5 ounces
5 Minute Check 3. One of the largest pumpkins ever grown weighed about ¾ ton. About how many pounds did the pumpkin weigh?
5 Minute Check 3. One of the largest pumpkins ever grown weighed about ¾ ton. About how many pounds did the pumpkin weigh? 1 ton ¾ ton 2000 lbs = x lbs 2000 3 6000 1 x 4 = 4 = 1500 lbs
5 Minute Check 4. A 40 foot power boat is for sale by owner. How long is the boat to the nearest yard?
5 Minute Check 4. A 40 foot power boat is for sale by owner. How long is the boat to the nearest yard? 1 yard x yard 3 feet = 40 feet 1 1 x 40 = 40 ÷ 3 = 13 3
Flashcards
Lesson 4.6 and 4.7 Divide Fractions Tuesday, Oct 29 Lesson 4.6 and 4.7 Divide Fractions
Divide Fractions Objective: To understand how to divide a fraction by a fraction and a whole number by a fraction.
Divide Fractions At the end of this lesson you should be able to answer the following question. How is the process used to divide fraction similar to the process used to multiply fractions?
Divide Fractions To find the reciprocal of a fraction turn the fraction upside down. Example 3 4 Reciprocal of 4 is 3
Divide Fractions What is the reciprocal of: 1 2
Divide Fractions What is the reciprocal of: 1 2 2 1
Divide Fractions What is the reciprocal of: 5
Divide Fractions What is the reciprocal of: 1 5 5
Divide Fractions The product of a fraction and it’s reciprocal will always be what?
Example 5 6 30 6 x 5 = 30 = 1 Divide Fractions The product of a fraction and it’s reciprocal will always be what? 1 Example 5 6 30 6 x 5 = 30 = 1
Divide Fractions To divide a number by a fraction, multiply the number by the reciprocal of the fraction. Example 1 1 3 ÷ 2 = 1 2 2 3 x 1 = 3
Divide Fractions Dividing fractions is as easy as pie, Just flip the second fraction and multiply.
Divide Fractions Find. 1 3 4 ÷ 8 =
Divide Fractions Find. 1 3 4 ÷ 8 = 1 8 8 2 4 x 3 = 12 = 3
Divide Fractions Find. 5 1 6 ÷ 3 = Do this on your own.
Divide Fractions Find. 5 1 6 ÷ 3 = 5 3 15 5 1 6 x 1 = 6 = 2 =22
Divide Fractions Find. 5 7 ÷ 10 = Do this on your own.
Divide Fractions Find. 5 7 ÷ 10 = 5 1 5 1 7 x 10 = 70 =14
Divide Fractions Do this on your own. Mariska has 2/3 pound of sunflower seeds. Each day she feeds the cardinals in her yard 1/6 pound of sunflower seeds. How many days will she be able to feed the cardinals? Do this on your own.
Divide Fractions 2 1 3 ÷ 6 = 2 6 12 3 x 1 = 3 = 4 Mariska has 2/3 pound of sunflower seeds. Each day she feeds the cardinals in her yard 1/6 pound of sunflower seeds. How many days will she be able to feed the cardinals? 2 1 3 ÷ 6 = 2 6 12 3 x 1 = 3 = 4
Divide Fractions Mariska has 2/3 pound of sunflower seeds. Each day she feeds the cardinals in her yard 1/6 pound of sunflower seeds. How many days will she be able to feed the cardinals? 1 pound 2 3 1 1 1 1 1 1 6 6 6 6 6 6 1 day 1 day 1 day 1 day 1 day 1 day
Divide Fractions Find. 1 2÷ 3 = Do this on your own.
Divide Fractions Find. 1 2÷ 3 = 3 2 x 1 = 2 x 3 = 6
Divide Fractions Find. 2 7÷ 3 = Do this on your own.
Divide Fractions Find. 2 7÷ 3 = 7 3 21 1 1 x 2 = 2 = 10 2
Divide Fractions Jamar has an 8 foot piece of wood he wants to cut to build a step stool. If each piece is going to be 5/6 of a foot long, what is the greatest number of pieces he will be able to use?
He will have 9 full size pieces (plus 3/5 of one) Divide Fractions Jamar has an 8 foot piece of wood he wants to cut to build a step stool. If each piece is going to be 5/6 of a foot long, what is the greatest number of pieces he will be able to use? 5 8÷ 6 = 8 6 48 3 1 x 5 = 5 = 9 5 He will have 9 full size pieces (plus 3/5 of one)
Divide Fractions Do this on your own. At summer camp, the duration of a field hockey game is ¾ of an hour. The camp counselors have set aside 6 hours for games. How many games can they play? Do this on your own.
Divide Fractions 3 6÷ 4 = 6 4 24 1 x 3 = 3 = 8 At summer camp, the duration of a field hockey game is ¾ of an hour. The camp counselors have set aside 6 hours for games. How many games can they play? 3 6÷ 4 = 6 4 24 1 x 3 = 3 = 8
Divide Fractions At summer camp, the duration of a field hockey game is ¾ of an hour. The camp counselors have set aside 6 hours for games. How many games can they play? 6 hours ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
Divide Fractions How is the process used to divide fraction similar to the process used to multiply fractions?
Divide Fractions Agenda Notes Homework – Homework Practice 4-6 and 4-7 Due Wednesday, Oct 30 Chapter 4 Test–Friday, Nov 1 After school help session Thursday, Oct 31 2:15-3PM