Math Rational Number Operations Review

Devon had his two friends over for pizza. Devon ate 1/4 of the pizza. One of his friends ate 3/8 of the pizza and the other friend ate 1/8 of the pizza. How much of the pizza is left?

• 1/4

• 1/8

• 1/3

• 1/5

Chris decided to do his history homework a little bit each night. On the first night he did 1/5 of the homework, the second night he completed 1/4 of the homework, and the third night he worked 1/2 of the homework. How much of the homework has Chris completed?

• 19/20 or .95

• 1/2 or .5

• 1/3 or .33

• 1/10 or .1

Aryon has $20. He buys 2 Cokes that each cost $1.50. He also buys a sandwich for $5.50 and a bag of chips that costs $2.25. After Aryon pays for his lunch, how much money does he have left?

• $10

• $10.75

• $9.25

• $0

Ms. Sublett learns how to fly a plane. She starts on the ground and ascends (goes UP) 500 feet, then descends (goes DOWN) 150 feet, then ascends 50 feet. How high up is Ms. Sublett's plane now?

• 700 feet

• 500 feet

• back on the ground

• 400 feet

Ms. Hockless is trying to do a math problem that involves fractions but needs help. What would be a good way to show her?

• Convert the fractions to decimals by dividing numerator by the denominator and then solve

• Just add all the numbers on the fractions together

• Convert all of the fractions to percents and then solve

• Draw pictures of the fractions and just make a good guess at the answer