Rational Numbers and Basic Operations

Mrs. Apia's lesson 15 covers multiplication and division of rational numbers. Students learn to apply integer rules to rational numbers, interpret products and quotients in real-world contexts, and identify keywords indicating multiplication or division. Exercises include creating word problems, calculating monthly expenses, and solving fundraiser-related questions. The lesson emphasizes understanding the signs of products and quotients and applying these concepts to practical situations.

What is the main focus of the lesson introduced by Mrs. Apia?

• Addition and subtraction of rational numbers

• Understanding geometric shapes

• Multiplication and division of rational numbers

• Solving quadratic equations

In Exercise 1, what is the result of multiplying 3 by -2?

• 5

• -6

• 6

• -5

How does the process of solving a problem with rational numbers differ from solving with integers?

• It is more complex

• It involves the same process

• It uses different operations

• It requires different rules

What is the monthly expense for Melinda's parents if they spend $2640.90 annually on cable and internet?

• $220.06

• $220.09

• $220.07

• $220.08

What is the rule for dividing a negative number by a positive number?

• The quotient is positive

• The quotient is zero

• The quotient is undefined

• The quotient is negative

In the fundraiser chart, how much does Mr. Clark owe if he pays with a $20 bill for an $11.25 order?

• $7.75

• $10.75

• $8.75

• $9.75

What is the average donation if three people donate a total of $14.40?

• $4.80

• $4.50

• $5.00

• $4.70

How much does Jeremy collect on average per sale if 22 people purchase plants totaling $270?

• $12.25

• $12.28

• $12.27

• $12.30

Which key word indicates a division operation?

• Sum

• Quotient

• Product

• Difference

Which of the following words suggests a negative value?

• Rise

• Borrow

• Earn

• Deposit