# Errors

Feel free to e-mail any errors to: mavabooks@comcast.net

Corrections in MAVA Math: Number Sense–Currently none to report.

Corrections in MAVA Math: Number Sense Solutions–Currently none to report.

Corrections in MAVA Math: Enhanced Skills (only)–Currently none to report.

Corrections in MAVA Math: Enhanced Skills Solutions (only)

1. Page 179, #6: The slope is -1/3. y = (-1/3)x – 5

2. Page 203, #2: 380 (not 180)

3. Page 303, #1: The list is incomplete. Also include 2+5, 5+2, 3+4, 4+3, 5+6, 6+5. The numerator of the fraction is then 15 instead of 9. The answer is 5/12.

4. Page 308, #8: Inside the parentheses of the work, the words “no tail” should appear 3 times.

Corrections in MAVA Math: Enhanced Skills and MAVA Math: Enhanced Skills Solutions

1. Page 206, #6: Insert words to clarify the problem. “Find the least number of cookies for the mother to bring to ensure . . .  .”

2. Page 314, #6: Change ∆BCD to ∆ACD.

Corrections in MAVA Math: Middle Reviews (only)–Currently none to report.

Corrections in MAVA Math: Middle Reviews Solutions (only)

1. Page 102, Level 7, Number 36, #5: Slash the 2 in the top, rightmost denominator. The 2 simplified with the 28 to yield 14.

Corrections in MAVA Math: Middle Reviews and MAVA Math: Middle Reviews Solutions

1. Page 60, Level 6, Number 60, #9: Change “Fiind” to “Find” in both parts of the problem.

2. Page 221, Sample Test B, #46: Change “Fnd” to Find”.

Corrections in MAVA Math: Grade Reviews (only)

1. Page 60, Level 2, Number 16, #9: The partial answer should not be shown.

2. Page 139, Level 4, Number 7, #3: The 4th problem should be 5/8 of 24. The 24 is missing.

3. Page 203, Level 5, Number 27, #4: The three triangles are missing. Copy them from the corresponding problem in the Solutions book.

Corrections in MAVA Math: Grade Reviews Solutions (only)

1. Page 22, Level 1, Number 22, #6: The oval also has a vertical line of symmetry.

2. Page 23, Level 1, Number 23, #9: Change rightmost diagonal to end in bottom right corner (incorrectly shows 5-sided figure)

3. Page 30, Level 1, Number 30, #9: 43 + 10 = 53

4. Page 33, Level 1, Number 33, #7: This answer is correct and best. However, an alternate answer may be circling the 2nd figure from the left and writing “Not non-congruent sections” although the double negative is undesirable and misses the point of the exercise.

5. Page 95, Level 3, Number 7, #8: Leftmost answer is 9805. Middle answer is 8416.

6. Page 100, Level 3, Number 12, #6: A second answer could be 22 because it has duplicate (equal) digits.

7. Page 125, Level 3, Number 37, #1: 8 • 4 • 2 = 8 • 8 = 64

8. Page 128, Level 3, Number 40, #10: This solution is correct but unclear. To obtain the number of numbers in a consecutive list, subtract and add 1. August has 31 days. Thus, 31–6 = 25; 25 + 1 = 26; 26 + 5 (days in Sept) = 31. The +1 and +5 were combined to +6. This work is not supposed to match the alternate method suggested in the “Or” comment, namely 31–5+5 = 31.

9. Page 150, Level 4, Number 18, #8: Check the leftmost figure also. A horizontal and a vertical both measure one unit and thus are congruent.

10. Page 153, Level 4, Number 21, #2: The answer is correct. However, replace “2– 4” with “4– 4” in the work.

11. Page 162, Level 4, Number 30, #2: The addends are correct. However, replace the answer of 97,999 with 117,999.

12. Page 167, Level 4, Number 35, #7: Insert “4– 1” into the work. The correct total is 10.

13. Page 167, Level 4, Number 35, #10: The first answer is 5 2/7.

14. Page 175, Level 4, Number 43, #7: The answers are given in ascending order. Reverse them to answer correctly.

15. Page 191, Level 5, Number 15, #9: For the left problem, 21/30 simplifies to 7/10. For the right problem, the work for the answer is 22/12 (not 22/20), which simplifies to the answer 11/6.

16. Page 196, Level 5, Number 20, #3: Change 1032 to 1024. Then the answer is 10,897.

17. Page 197, Level 5, Number 21, #1: In the last step, subtract 100 (1/10 of the original amount), not 40 (1/10 of what was left at that point). The answer is \$300.

18. Page 216, Level 5, Number 40, #4: 75% of 20 is 15 (not 5).

Corrections in MAVA Math: Grade Reviews and MAVA Math: Grade Reviews Solutions

1. Page 5, Level 1, Number 5, #7: Change “4st” to “4th”; Change “2rd” to “2nd”.

2. Page 58, Level 2, Number 14, #9: Delete “a” from the 3rd item so that it reads “getting two 3s”.

3. Page 70, Level 2, Number 26, #3: 1:05 PM to 9:05 PM

4. Page 81, Level 2, Number 37, #6: In Clue 4, change 700 to 800. (Alternatively, leave as is and note in the Solutions book that 784 is a second answer.)

5. Page 94, Level 3, Number 6, #1: In the 2nd line, the word “first” should be “fish”.

6. Page 120, Level 3, Number 32, #2: The problem should say “. . . greater than right (G) . . .”.

7. Page 132, Level 3, Number 44, #2: The problem should say “. . . greater than right (G) . . .”.

8. Page 141, Level 4, Number 9, #6: In the problem, change “1/3” to “1/3 of the remainder”. Or, leave the problem and change the answer (see below).

9. Page 141, Level 4, Number 9, #6: 1/2 = 3/6 = G. 1/3 = 2/6 = Y. Rest = 1/6. 1/2 of 1/6 = 1/12 = R. Answer is 1/12. Or, change the problem only (see above).

10. Page 149, Level 4, Number 17, #6: Insert the letter “l” in the last line, giving “triangle”.

11. Page 157, Level 4, Number 25, #2: The problem should say “. . . greater than right (G) . . .”.

12. Page 160, Level 4, Number 28, #5: Change “a triangle” to “an equilateral triangle” in the 3rd part.

13. Page 163, Level 4, Number 31, #3: The chart should have one more column in both books. “016” is also an answer.

14. Page 169, Level 4, Number 37, #2: The problem should say “. . . greater than right (G) . . .”.

15. Page 178, Level 5, Number 2, #6: On the number line, change the leftmost -2 to -3.

16. Page 185, Level 5, Number 9, #7: On the number line, change the leftmost -2 to -3.

17. Page 191, Level 5, Number 15, #6: Keeping the problem as written, the chalkboard font comment is wrong. One twelfth of 120 gives 10 for the answer. Or, change the wording of the problem from “How many” to “What fractional part of the roses”. Then the answer and comment are correct.

18. Page 202, Level 5, Number 26, #5: Change “beads” to “marbles” because a student might question whether the beads are all the same size and shape.

19. Page 202, Level 5, Number 26, #6: Delete the word “odd” from D. Then, D = the number of 1-digit prime numbers (which stays 4).