Unit 2 Test Review

Evaluate: -13 • (-6) + 6.75 – 78.75 Answer: 6

  Diana has a jar of marbles. She decided to share some with her friend Angela and gave ½ of the marbles to Angela. A few days later, she used ½ of what was left to decorate a fish tank and gave the rest to her cousin Corey. Corey took ½ of what he was given and put them in a bag. Corey’s sister Samantha took the jar and dropped ½ of the marbles on the floor. What fraction of the original marbles did Samantha drop? Answer: 1/16

She can finish 2 bulletin boards. Ms. Marflak has 14 3/5 feet of board border available to use as a border for the class bulletin boards. If each bulletin board requires 6 3/5 feet of border, how many bulletin boards can she finish?  Answer: 2 7/33 She can finish 2 bulletin boards.

What are the BASIC PROPERTIES OF ZERO? Multiplying a number by zero always gives zero. 5 x 0 = 0 Zero as a numerator : Zero, divided by any nonzero number, is zero. 0/5= 0 Division by zero is not allowed : Any division problem with zero as the denominator is not defined. 5/0 = undefined

Evaluate: 7 × 1/7 × 0/8 Answer: 0

Answer: 37. 5 or 37 ½ You can make 37 complete goodie bags. How many complete ⅗ pound goodie bags can you make from a 22.5 pound bag of candy?    Answer: 37. 5 or 37 ½ You can make 37 complete goodie bags.

(-4) • 12 ÷ (-8) Answer: 6

Mrs. Christ needs. 45 of stick of butter for one serving of a recipe Mrs. Christ needs .45 of stick of butter for one serving of a recipe. How many stick of butter will she need for 7 serving?   Answer: 3.15

Mrs. Christ ran 12 ⅗ miles in 6. 3 hours Mrs. Christ ran 12 ⅗ miles in 6.3 hours. On average, how many miles did she ran per hour? Answer: 2

Evaluate: 4 1/5 ÷ ( - 3/10) Answer: -14  

Evaluate: -45 ÷ 9 + 5 Answer: 0

Mrs. Christ savings account balance was $4,054. 25 Mrs. Christ savings account balance was $4,054.25. She made seven withdrawals from her savings account each of $128.75 to pay her babysitter. What is her current balance?   Answer: 3,153

Answer: 82.8 Day Mon Tue Wed Thu Fri Grade 72 83 100 91 68 The table gives Steve's daily grade for the Do Now for one week. Find Steve's average grade for daily Do Now for the week. Round your answer to the nearest tenth. Day Mon Tue Wed Thu Fri Grade 72 83 100 91 68 Answer: 82.8

Evaluate:     (2/3 + 5/6) • (-2 + 6) - 15 Answer: -9

Mrs. Christ and Ms. Marflak are debating over the solution to the following problem: -9 ÷ (-3) • (-12) Mrs. Christ says the answer is - .25 and Ms. Marflak says the answer is -36 . Solve the problem.  -36 Who is correct?  Ms. Marflak Identify the mistake that was made by the teacher who solved the problem incorrectly.   Mrs. Christ didn’t follow order of operations she multiplied instead of dividing first.