Applying Rational Number Operations

Warm Up It’s a good idea to check my answers because….. I check my answers by ………………………………........

Hu is installing a new window in his bedroom wall Hu is installing a new window in his bedroom wall. He wants to center it horizontally. The window is 40 1 2 inches long, and the wall is 105 1 4 inches long. How far from each edge of the wall should Hu install the window?

Jon is hanging a picture Jon is hanging a picture. He wants to center it horizontally on the wall. The picture is 𝟑𝟐 𝟏 𝟐 inches long, and the wall is 𝟏𝟐𝟏 𝟏 𝟒 inches long. How far from each edge of the wall should he place the picture?

A 1-gallon container of milk contains 32 half-cup servings and costs $3.89. A batch of muffins uses 3 5 cup of milk. How many batches can you make if you use all the milk? What is the cost of milk for each batch?

Mindy has an unpaid balance of $1,250 on her credit card Mindy has an unpaid balance of $1,250 on her credit card. The monthly finance charge is 1 3 4 %. If she makes no additional purchases and does not make any payments to the credit card company, what will be the balance after two months?

Change 2 3 8 % to a decimal.

Distributive Property of Multiplication The distributive property of multiplication can be used to multiply a mixed number with another rational number. For example: 4.5 ×3 1 5 . 4.5 ×3 1 5 =4.5 × 3+ 1 5 = 4.5 ×3 + 4.5 × 1 5 = 13.5+0.9= 14.4

Diane serves breakfast to two groups of children at a daycare center Diane serves breakfast to two groups of children at a daycare center. One box of Oaties contains 12 cups of cereal. She needs 1 3 cup for each younger child and 3 4 cup for each older child. Today’s group includes 11 younger children and 10 older children. Is one box of Oaties enough for everyone? Explain.

A teacher gave a test with 50 questions, each worth the same number of points. Donovan got 39 out of 50 questions right. Marci’s score was 10 percentage points higher than Donovan’s. What was Marci’s score? How many more questions did Marci answer correctly?

Exit Ticket 1. Matteo is centering a poster on the back of a door that is 32 inches wide. The poster is 18 1 2 inches wide. How far from the edge of the door should Matteo hang the poster? 2. Katelyn bought 3 packages of ground beef. The packages weighed 2.65 lb., 1.85 lb., and 2.46 lb.. She divided the ground beef into 4 packages, each the same weight. How many pounds of ground beef were in each package? 3. Two years ago, Paul bought $350 worth of stock in a cell phone company. Since then the value of his stock has been increasing at an average rate of 9 3 4 % per year. How much is the stock worth now? 4. Jasmine finished the bike trail in 2.5 hours at an average rate of 9 3 10 miles per hour. Lucy biked the same trail at a rate of 6 1 5 miles per hour. How long did it take Lucy to bike the trail?