Partial Key for Test Best

Test Best Key 6th grade math only

p. 56
1. d 2. g 3. 6 1/3 4, c 5, g

p 57
1. b 2. h 3. b 4. h 5. 4,300 m

p. 58
1. c 2. f (lots of kids miss this one.) 3. a 4. g 5. c 6. 18 x 6 x 3 = B

p. 59
1. a 2. j 3. c 4. The probability of back 2 is 2/8, which is bigger than the probability of ahead 2, which is just 1/8.

p. 60
5. g 6. b 7. j 8. d 9. Naples, Tampa, and Orlando

p. 61
1. b 2. g Please remember that x comes before y!!! 3. a 4. f

p. 62
5, c 6, j 7. c 8. (4,3) Remember that x comes before y, or horizontal before vertical.

p. 63
1. b 2. h 3. c 4. Multiply 12 x 30 = 360 because there are 12 inches in a foot.

p. 64
5. g 6. c 7. g 8. a 9. j 10. b 11. Measure how many inches there are from the museum to the lighthouse. (2 1/2 inches) Convert the inches to miles by multiplying the number of inches by 20. 2 1/2 x 20 = 50. Or 2.5 x 20 = 50 miles.

p. 65
1. b 2. h 3. c 4. Twenty eight 1 + 2 + 3 + 4 + 5 + 6 + 7 total dots

p. 66
1. a 2. h 3. a 4. j 5. d 6. Subtract to find the difference between 73 and 3 yd.

p. 67
1. a 2. g 3. d 4. How many of them are children and how many are adults.

p. 68.
1. d 2. f 3. c 4. g 5. d 6. f 7. Three billion, four hundred and twenty one million, ninety-five thousand, and eight hundred and four.

p. 69.
8. c 9. g 10. c 11. f 12. c 13. B because it has a 4/10 (or 2/5) probability of being picked, which is greater than the probability of picking a D, which is 3/10.
14. g 4/12 is equal to 1/3. Do a proportion to simplify 4/12 to 1/3.

p. 70.
15. b 16. g 17. c 18. h 19. b 20. $56.25

p. 71

21. h 22. a 23. $12 Add up each month's savings and divide by the number of months. 11 + 6 + 18 + 13 = 48 Then 48 divided by 4 is $12.
24. h 25. d This is really similar to one of the constructed response questions on the ERB. You need to picture that there are three possibilities for each kind of crust, so 2 x 3 = 6. ( A tree diagram with branches- or a chart-- helps you see it.)

p. 72
26. f 26. b 28. f 29. c 30. j (x before y!!!) 31. 30 x 20 = 600 sq. ft.
You can also say that you need to multiply the length x width to find the area of a rectangle.

p. 73
32. b 33. g 34. d 35. j 36. Sam, Ralph, Chris, Ben

p. 74
37. d 38. g 39. d 40. f 41. d 42. What is the size of the population now?

p. 75
1. c 2. g 3. c You need to add 3/12 plus 4/12 to get 7/12
4. k Remember that NH means "not here" and the right answer to this subtraction problem is .291 Fortunately, on the ERB we will have very few NH questions.
5. c. You need to convert 2/3 to 8/12 and 1/4 to 3/12 and then, once they have common denominators, you can add up the numerators.

6. Multiplying fractions is the easiest thing to do with fractions! You just multiply numerator times numerator and denominator times denominator. Hooray! You don't have to restate anything with common denominators.
So 10/56 is the answer before you reduce it to simplest form, which is 5/28.

p. 76
1. a 2. h 3. d 4. Each person got 1/8 of the total. 1/8 = 12.5 %. (If you forget how to find this, just think of 1/8 as half of 1/4, so the percent for 1/8 would be just half of the percent for 1/4, which is 25%.)

p. 77
1. c 2. h 3. c 4. g 5. d 6. f 7. e Not Here because the answer is 3.088 8. You must find a common denominator for the two fractions, the lowest of which is 12. It is 12 because that is the least common multiple (LCM) of 4 and 6. You can then restate 1/4 as 3/12 and restate 1/6 as 2/12. Now, once you've got both fractions restated with common denominators, you just subtract to find your answer of 1/12.

p. 78
9. k Not Here again because the answer is 2,080. 10. b. because 75 % is 3/4 and 24/32 can be reduced to 3/4.
11. Silly question. It would be better if there were something to do. The answer is just 41 million or 41,000,000, 12. h 13. a

p. 106
1. d 2. h 3. b 4. h 5. b 6. j 7. From lightest to heaviest: 4.04, 4.09, 4.63, 4.7

p. 107
8. x = 0 (identity property of zero) 9. c 10. g 11. d 12. h 13. a 14. f

p. 108
15. d 16. f 17. b 18. h 19. b 20. The answer is 2 x 3 x 3 = 18 Like the pizza question on p. 71, you will probably find a chart or tree diagram helpful.

p. 109
21. g 22. d 23. f 24. d 25. 4/14 or 2/7

Problem 25 is a good one to linger over. What are the chances that a bead picked at random will be red or yellow? This is similar to one of the ERB constructed response questions, where you need to explain your answer.

p. 110
26. h 27. 12 inches 28. b 29. f 30. d

p. 111
31. j 32. d 33. g 34. a 35. (4,2) Again remember (x,y) order--alphabetical!

p. 112
36. f 37. c 38. Perimeter = 2 x length + 2 x width. The final answer you get should be 8 inches.

39. h 40. d 41. h 42. b 43. h 44. b 45. h 46. a 47. How tall is Stephanie?

p. 114
48. f 49. b 50. h 51. a 52. h 53. They have about 340 cattle left. Estimate 560-220 = 340.

p. 115
1. d 2. h 3. b 4. f 5. b 6. k 7. d 8. 56, 940 9.j 10. d 11. f 12. a 13. g