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Semester Review

Semester Review. Fall – 2012 Regular Math. Data About Us. Median- Mode- Range-. Median. Mr. Franks recorded these mathematics test scores of his sixth-grade students. 67, 69, 71, 73, 74, 75, 79, 81, 81, 82, 83, 87, 88, 88, 88, 88, 90, 91, 93, 95, 99, 100

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Semester Review

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  1. Semester Review

    Fall – 2012 Regular Math
  2. Data About Us Median- Mode- Range-
  3. Median Mr. Franks recorded these mathematics test scores of his sixth-grade students. 67, 69, 71, 73, 74, 75, 79, 81, 81, 82, 83, 87, 88, 88, 88, 88, 90, 91, 93, 95, 99, 100 What is the median of these test scores? F 83 G 85 H 87 J 88
  4. Mode The low temperatures recorded in Houston, Texas, for the first part of December were: 65, 54, 51, 50, 48, 44, 43, 41, 39, 39, 38, 34, 32 What is the mode low temperature during this time period? A 65 B 43 C 39 D 33
  5. Range The low temperatures recorded in Houston, Texas, for the first part of December were: 65, 54, 51, 50, 48, 44, 43, 41, 39, 39, 38, 34, 32 What is the range low temperature during this time period?
  6. Mean (Average) Mean- Find the mean of the following numbers: 15 20 12 14 4
  7. Angles Acute – Right – Obtuse – Straight -
  8. Angles Which angle will not represent an acute angle? A. 25° B. 76° C. 91° D. 1° Give 5 examples of obtuse angles? Draw a right angle and give real-life examples of right angles.
  9. Angles What kind of Angle is N? What kind of Angle is M? * What kind of Angle is P and O?
  10. Protractor Highlight the angle Classify the angle Find the exact
  11. Protractors
  12. Protractors A parallelogram is shown below. Find the measure of S to the nearest degree. A 136° B 124° C 64° D 56° Find the measure of T to the nearest degree.
  13. Graphing What are the directions for plotting points on a coordinate grid? What is an ordered pair? What do we call (0, 0)?
  14. Graphing
  15. Graphing
  16. Graphing
  17. Prime Factorization A way to write a number as the product of prime factors. (factor tree) 36 6 6 2 3 2 3 or x 2 3 3 2
  18. Prime Factorization Find the prime factorization of 60. F 32· 10 G 2 · 3 · 10 H 2 · 2 · 15 J 22· 3 · 5 Which of the following is a correct prime factorization of 44? A B C D
  19. Prime Factorization
  20. Least Common Multiple The smallest common multiple of a set of two or more numbers. LCM can be found by using: Prime factorization Upside down division Making a list
  21. LCM At a spring band concert, a prize was awarded to the person sitting in the chair numbered with the least common multiple of 12, 15, and 30. Find the number of the prizewinning chair. F 60 G 45 H 30 J 15 Which of the following is the least common multiple that Valerie can use to add three fractions with denominators of 6, 8, and 9? A 48 B 54 C 72 D 144
  22. LCM Mai Le pays her grocery bill every 15 days, her rent every 30 days, and her credit card bill every 20 days. On which day will she pay all three bills? A 15th day B 30th day C 45th day D 60thday Mr. Samples and his 23 students are planning to have hot dogs at their class picnic. Hot dogs come in a package of 12 and buns come in a package of 8. What is the least number of packages of hot dogs and buns that Mr. Samples can buy so that each person can have 2 hot dogs? A 2 packages of hot dogs & 3 packages of buns B 3 packages of hot dogs & 2 packages of buns C 4 packages of hot dogs & 6 packages of buns D 6 packages of hot dogs & 4 packages of buns
  23. Greatest Common Factor The largest number that divides evenly into two or more numbers. GCF can be found by using: Prime Factorization Upside down division Making a list
  24. GCF On a field day, 84 girls and 78 boys will be split into teams. Each team will have the same number of girls and the same number of boys. At most, how many teams are possible? A 2 B 6 C 13 D 14 Which number is NOT a common factor of 12 and 30? A 2 B 3 C 5 D 6
  25. GCF Eva has 24 blue beads, 36 gold beads, 60 silver beads, and 72 purple beads. She is planning to decorate jewelry boxes for her friends and wants to distribute the beads evenly among the jewelry boxes. What is the greatest number of jewelry boxes that Eva can make? A 6 B 8 C 10 D 12 A stamp club president distributes equally one set of 18 animal stamps and another set of 30 sports stamps to members present at a meeting. Not stamps were left over. What is the greatest number of club members that were at the meeting? A 2 B 3 C 6 D 9
  26. Order of Operation Rules describing what sequence to use in evaluating expressions: (1) Evaluate parenthesis first (2) Multiply or divide left to right (3) Add or subtract left to right. ( ) X or ÷ + or -
  27. . Order of Operation Which expression would give 18 as the correct answer? A 9 + 5 – 3 · 4 B 2 • 6 + 10 ÷ 5 C 5 – 3 + 6 • 2 D 12 • 2 ÷ 3 + 10
  28. Changing a Fraction to a Decimal Look at the denominator to see if you can change it to a power of ten (10, 100, 1000, etc…) If you can change * If you cannot change the the denominator, then also denominator then divide the change the numerator by numerator by the denominator multiplying it by the same factor used to change the denominator. D N
  29. Fraction to a decimal Stephanie bought a basketball on sale for $15, which was off the original price. What decimal represents the discount she received? F 0.05 G 0.15 H 0.20 J 0.50
  30. Changing a Fraction to a Percent Percentage is out of 100, so if possible change the denominator to 100. Change the numerator by multiplying it by the same factor that was used to change the denominator to 100. The numerator will be the percent. If you cannot change the denominator to 100 then you will need to divide the numerator by the denominator and then multiply it by 100.
  31. Fractions to Percents By the end of August, the school counselors had completed 12 out of every 16 student requested schedule changes. What percentage of the schedule changes had NOT yet been completed? 75% 66% 28% 25%
  32. Changing a Percent to a Decimal Divide the percent by 100. Example: 17% 100 17
  33. Changing a Percent to a Decimal Johann spends 45% of his day either at school or doing homework. What decimal best represents the percent of time that Johann spends on school-related activities? A 0.045 B 0.45 C 4.5 D 45.0
  34. Changing a Percent to a Fraction Put the percent over 100 and then simplify. Example: 45% 459 100 20
  35. Changing a Percent to a Fraction Maria has saved 65% of the total cost of a trip to California. What fractional part of the trip’s cost does she still need to save? A B C D Franklin’s Vending Service received a shipment of soda for its machines. The manager determined that 15% of the cans were damaged. What fraction of the cans were damaged? F G H J
  36. Changing a Decimal to a Percent Multiply the decimal by 100 Example: .47 100 X .47 = 47%
  37. Changing a Decimal to a Percent Change: 0.125 .65 .01 .11 1.50
  38. Changing a Decimal to a Fraction Read the decimal and write it as a fraction Example: .45 is read as 45 hundredths .231 is read as 231 thousandths
  39. Changing a Decimal to a Fraction Jeremy runs track for his school. After school during practice, he ran a total of 4.25 miles. Which mixed number is the same as the number of miles that Jeremy ran? A 4 B 4 C 4 D 4
  40. Angle Sums The Angle Sum of a triangle is 180° The Angle Sum of a Quadrilateral is 360°
  41. Angle Sums
  42. Angle Sums
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