Errata Sheet for "Traditional Math"

For those of you who have purchased my book “Traditional Math”, I have provided this errata sheet for your information and use. I am embarrassed to see such math errors, but am assured by the publisher and other authors that it is fairly common. And I’ve had textbooks with errors as well. Nevertheless, I’m hoping that the remaining editions of the book sell out soon, so we can get a new edition out that is (relatively) error-free. In the meantime, here is the list. If you find any that are not on this list, please let me know, and I will update the sheet.

p. 49 of book: In Rounding, the first sentence of the second paragraph should be “identify”, not “identity”. 

p. 53 of book: In the example there should be parentheses around 2+5, so the problem should read 14 ÷ (2+5) -1 = 1

p. 79 of book: Figure 6-2.  The answer should be 5 hundreds, not 3 hundreds.

p. 94 of book: The sixth line of the page should say “students”, not “student”.

p. 132 of book: The second example should say 32*10, not 32 x 20 .

p. 147 of book: Answer to question 1 of warm-up should be “east” not “west”; answer to question 2 of warm-up should be “west” not “east”.

p. 153 of book: In the second paragraph in the opening discussion, second sentence: “One important case that hasn’t yet been explored is subtraction of a negative integer, such as 5– .”  Last part of sentence should read “such as 5 – (-10).”

p. 153 of book: In Warm-up question 3 it reads: Answer: -5 - 20= -25; or -5 +(-20) = -25.  It should read: -5 – 15 = -20 or -5 + (-15) = -20.

p. 155 of book: In second paragraph, it reads:

“Now suppose we have this problem.” I write on the board:

10–(–4)To keep things straightforward, …”

The 10 – (-4) should appear on a separate line as follows below:

“Now suppose we have this problem.” I write on the board:

10 – (–4)

To keep things straightforward,…”

p. 159 of book: The last sentence in the first paragraph should end with “What number added to -3…” not “added to -6”.

p. 160 of book: For Warm-up No. 5, the answer should be 3, not -3.

p. 161 of book: First sentence under the bolded heading in mid page: Sentence should read “…water flowing into the tank at 10 gallons per minute” not “3 gallons per minute”.

p. 165 of book: After the two italicized rules, the first sentence of the paragraph that follows should read “Since students know that 2 X -3 …”, not 2 X 3.

p. 168 of book: The last sentence of the second paragraph on that page should read “Substituting x in for 10…”, not “x in for 5”. 

p. 199 of book: Under the heading “Using Tape Diagrams (Bar Models), the second sentence in first para should read “…two girls for every boy.”

p. 244 of book: The answer to Warm-Up No. 1 should read: Answer: 55 - (55- 0.2·55) = 55 - 11 = $44.

p. 264 of book: In Warm-up No. 1, the second sentence should read: “Three more than two times some number is 11.” Not “10”. 

p. 285 of book: In second paragraph, last sentence, the word “quick” should be “quickly”. 

p. 286 of book: In the answer to problem 5 of the Warm-up, in 4^th sentence the term “½ x should be “-½  x”.

p. 314 of book: The answer to example number 6, mid-page, should be: x^6 not x^8.

p. 318 of book:  At the end of the paragraph under “Homework”, should be:

\( "Answer: h=3v/(πr^2 )"\)

p. 334 of book: In Problem 1 under the heading “Examples”, second sentence, the word “the” before Mr. Smith should be deleted.

p. 393 of book:  In first paragraph, 2^nd sentence change “the lesson prior” to “a lesson prior”. 

p. 395 of book: The answer to Warm Up no. 2 the denominator of the final answer should be

\(x^2-4 \)

p. 402: In the last sentence in the paragraph at the top of page, called “Solution”, the left side of the equation should read:

\((4+x)/(16+x) \)

p. 410 of book: In the table, the last column, in the second row (labeled “Up”) should have D/3not D/4.   And in the equation below the table the left hand side should read:

\(D/3+D/6 \)

p. 437 of book: The third equation on that page should read:

\(x^2 + 2x + 1 = 7+1\)

The second paragraph after the above equation should read: “I’m counting on someone to recognize that it’s a perfect square trinomial, otherwise known as the square of a binomial.”

p. 460 in book: Second paragraph: “Normal Maclean” should read “Norman Maclean”.