Rational Number Operations (7th grade)

What is the value of (-4.5)(-8.25)?

The temperature at noon was -3 degrees Celsius. By 10 P.M. on the same day the temperature decreased by 5.4 degrees Celsius. What was the temperature at 10 P.M.?

A sandwich costs $5.70 and a piece of fruit costs $2.15. If you have a $20 bill, how much change will you get?

Alexis sold boxes of homemade granola bars for $8.50 each. It costs her $2.25 to bake and package each box of granola bars. What was her profit from selling each box of granola bars?

What is the value of -7/8 ÷ -1 2/5? Give the quotient in fraction form.

Gail read 2/15 of a book on Monday and 3/5 of the book on Tuesday. What fraction of the book did she read on Monday and Tuesday?

What is the product of -1 3/8 and 2 4/5 expressed as a mixed number?

Evaluate: 1 + 2 + 2^2 + 2^3 + ... + 2^2024

Linda earns $90,000 per year. If she does not work for 2 months in a year, how much money would she earn?

What is the result when -2.5 is divided by 1.8?

Derek spends $3 on breakfast and $5.50 on lunch every school day. How much does he spend on breakfast and lunch in a school week?

Evaluate

What is the value of -3 2/3 ÷ 1/3 ?

What is the average of -2.5, 5.2, 1.7, and -0.8?

Working together, 5 friends collected 40 5/8 bags of food for the homeless. On average, how many bags of food did each friend collect?

An artist is cutting pieces of ribbon to use in a project. Each piece he cuts measures 7/8 inch. The artist cuts off 5 pieces. How many total inches of ribbon has he cut off? Give answer in mixed number form.

Evelyn wants to buy 5 pens that cost $2.45 each and 3 notebooks that cost $4.39 each. If she currently has $20, how much more money does she need?

Ms. Henning wants to purchase 30 calculators for her math class. Calculators cost $14 each. Ms. Henning currently has $300 in her account to spend on the calculators. How much more money does she need?

True or False?

What is the value of -3 + 4.5 - (-1.2) ?