Exploring Multiplication and Division of Rational Numbers

This video tutorial teaches how to multiply and divide rational numbers in real-life situations. It covers two word problems: one about baking cookies and another about making Valentine goodie bags. The video guides students through identifying known and needed information, planning, and solving the problems. It emphasizes understanding operations like multiplication and division in context and provides practice opportunities and a constructive response task.

What types of numbers will you be able to multiply and divide by the end of this lesson?

• Fractions and decimals

• Whole numbers and integers

• Even and odd numbers

• Prime numbers and composites

In the first word problem, how many batches of cookies is Mrs. Neville baking?

• Six batches

• Five batches

• Four batches

• Three batches

What is the key word in the first word problem that indicates multiplication?

• Total

• Each

• Sum

• Difference

How do you convert the mixed number 2 1/2 into an improper fraction?

• 3/2

• 5/2

• 4/2

• 7/2

What is the resulting change in the amount of flour in the bag after Mrs. Neville bakes the cookies?

• -12.5 cups

• -10 cups

• -15 cups

• -7.5 cups

In the second word problem, how many pounds of candy does Jody have initially?

• 5 1/4 pounds

• 8 1/4 pounds

• 6 1/4 pounds

• 7 1/4 pounds

What operation is used to solve the second word problem involving Jody's candy?

• Addition

• Subtraction

• Division

• Multiplication

How do you convert the mixed number 6 1/4 into an improper fraction?

• 23/4

• 26/4

• 24/4

• 25/4

What is the final answer for the number of full goodie bags Jody can make?

• 18

• 17

• 16

• 15

What should you always include when answering the constructive response questions?

• Just the calculations

• Explanation, work shown, and complete sentences

• A brief summary

• Only the final answer