Operations with Fractions and Integers

Mrs. Lopez teaches a lesson on addition and subtraction of rational numbers, covering rules and examples using number lines. The lesson includes exercises on representing sums and differences, working with mixed numbers and decimals, and applying these concepts to real-life scenarios. The session concludes with a review of key concepts and encouragement to revisit the material if needed.

What are rational numbers composed of?

• Whole numbers and percentages

• Only positive integers

• Only negative integers

• Positive and negative mixed numbers, decimals, and fractions

How do you represent subtraction on a number line?

• By moving to the right

• By changing subtraction to addition of the opposite

• By drawing a circle

• By moving to the left

What is the result of 12 plus negative 3 and a half?

• 9

• 8 and a half

• 15 and a half

• 10

What property allows you to change the order of addends without affecting the sum?

• Associative Property

• Identity Property

• Commutative Property

• Distributive Property

When subtracting fractions, what must you do if the denominators are different?

• Multiply the fractions

• Subtract the denominators

• Find a common denominator

• Add the numerators

What is the result of 7 minus negative 9 tenths?

• 6.1

• 6.9

• 8.1

• 7.9

How do you handle subtraction of a larger fraction from a smaller one?

• Ignore the larger fraction

• Multiply the fractions

• Borrow from the whole number

• Add the fractions

If Samantha owes $7 and pays $5.50, how much does she still owe?

• $0.50

• $2.00

• $1.00

• $1.50

How much gas is left if a car starts with 12 gallons and uses 10 and 1/8 gallons?

• 1 and 7/8 gallons

• 2 gallons

• 1 gallon

• 3 gallons

What is the final position of a fish that moves 3 and 1/2 feet and then 5 and 1/4 feet below the surface?

• 8 feet below

• 7 feet below

• 9 feet below

• 8 and 3/4 feet below