TEKS 7.3b Review (Operations with rational numbers)

Jose has $5.50 for lunch. He buys a cookie for $1.05 and a drink for 1.45. How much money does Jose have left?

• $2.50

• $3.00

• $1.25

• $4.00

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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

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Joe went scuba diving. He descended down to 5 feet below sea level, stopped, then went down another 20 feet. What is Joe's level?

• 25 feet

• -15 feet

• 15 feet

• -25 feet

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Nik brought a bag of candy to school. He started with 50 pieces, but gave out 15 pieces to EACH of his TWO friends. His nice math teacher gave Nik 3 pieces of candy. How much does he have now?

• 37 pieces

• 10 pieces

• 0 pieces

• 23 pieces

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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

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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

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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

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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

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Ms. Sublett's math class is putting three numbers (0.3, 1/4, and 20%) in order from least to greatest. Which answer is correct?

• 1/4, 20%, 0.3

• 0.3, 20%, 1/4

• 20%, 1/4, 0.3

• 0.3, 1/4, 20%

-4.5 is an example of what kind of number?

• whole number

• integer

• rational number

• irrational number