Errata – Fractions, Decimals, & Percents, 2nd Edition
Cover for 2nd Edition
2.0
| Page | Location | Description | Erroneous Text | Correction |
|---|---|---|---|---|
| 36 | Middle | Example of converting to a common denominator | 1/4 + 5/5 = 5/20 | 1/4 × 5/5 = 5/20 |
| 38 | Middle | Check Your Skills #6 is incomplete | x/3 – 4/9 = | x/3 – 4/9 = 8/9 |
| 41 | Bottom | Clarity/Grammar | we want to keep 1 of each those smaller pieces. | we want to keep 1 from each pair of those smaller pieces. |
| 57 | Top | #5 explanation | x/5 + 13/5 – 2/5 | x/5 = 13/5 – 2/5 |
| 58 | Bottom | #23 answer | 1/13: | 1/3: |
| 59 | Middle | #29 explanation | more than 170/340, and so is less than 1/2 | more than 170/340, and so is more than 1/2. |
| 59 | Top | #24 answer should be the smaller fraction | 5/9: | 7/13: |
| 62 | Top | Stray × mark in space between Quantity A and Quantity B | × | |
| 63 | Top | #1 explanation (mathematical completeness) | Multiplying the numerator of a positive fraction increases the numerator. | Multiplying the numerator of a positive fraction by a number greater than 1 increases the numerator. |
| 64 | Middle | #12 explanation | since 24 us the least common multiple | since 24 is the least common multiple |
| 71 | Middle | Typo in example of dividing by 10 | 89.507/10 = 8.3708 | 83.708/10 = 8.3708 |
| 74 | Middle | Redundant fraction | 45/900 = 45/900 = 5/100 = 0.05 | 45/900 = 5/100 = 0.05 |
| 84 | Top | #10 explanation | 0.00081/0.91 = 0.081/9 | 0.00081/0.09 = 0.081/9 |
| 92 | Bottom | Spelling | ORIGIANL ± CHANGE = NEW | ORIGINAL ± CHANGE = NEW |
| 97 | Bottom | Spelling in #7 | ORIGIANL | ORIGINAL |
| 97 | Bottom | #7 | 35(1.2) = 4.2 | 35(1.2) = 42 |
| 97 | Bottom | Spelling in #8 | ORIGIANAL | ORIGINAL |
| 99 | Top | #3 | From 1991 to 2000, | From 1990 to 2000, |
| 101 | Middle | Spelling in #2 | ORIGIANAL × (1 ? Percent Decrease/100) | ORIGINAL × (1 ? Percent Decrease/100) |
| 101 | Bottom | #3 | From 1991 to 2000, | From 1990 to 2000, |
| 102 | Top | Clarity in #6 | There are 1/4 cups in the bowl | There are 1/4 cups of water in the bowl |
| 102 | Top | Clarity in #6 | Alternately, the 4 cups added to the bowl | Alternatively, the 4 cups of water added to the bowl |
| 102 | Top | Clarity in #6 | there are 14 (50% of 20 + 4) cups in the bowl | there are 14 (4 + 50% of 20) cups of water in the bowl |
| 102 | Middle | Spelling in #7 | ORIGIANAL × (1 ? Percent Decrease/100) | ORIGINAL × (1 ? Percent Decrease/100) |
| 123 | Bottom | #15 explanation (last line) | Z = 100/Y | Z = 100X/Y |
| 135 | Top | #4 answer | 7/200: | 7/20: |
| 149 | Bottom | #5 answer choice labels | (E), (F), (G), (H), (E) | (A), (B), (C), (D), (E) |
| 151 | Top | #11 answer choice labels | (I), (J), (K), (L), (E) | (A), (B), (C), (D), (E) |
| 155 | Bottom | #4 answer choice format | (A), (B), (C) | A, B, C in boxes |
| 156 | Bottom | #9 clarity | In 2000, the same group of salaries | In 2000, the salaries of the same group of clerks |
| 157 | Top | #10: “3/8 of the 420 juniors” would imply that a half person could exist | 420 Juniors | 440 Juniors |
| 164 | Top | #12 answer | B: | A: |
| 167 | Bottom | #4 | (lets use x) | (let’s use x) |
| 172 | Bottom | #19 answer | B: | C: |
| 172 | Bottom | #19 explanation | 0.32/0.02 = 0.09/0.02 = 9/2 | 0.32/0.2 = 0.09/0.2 = 9/20 |
| 172 | Bottom | #19 explanation | (3/2)/(9/2) = 1/3. | (3/2)/(9/20) = 10/3. |
| 176 | Middle | #4 explanation | Squareroot(1/4) > [Squareroot(1/4)]/(1/4) | Squareroot(1/4) < [Squareroot(1/4)]/(1/4) |
| 178 | Bottom | #10 explanation | multiply by 420 to determine | multiply by 440 to determine |
| 178 | Bottom | #10 explanation | 420 × 3/20 = 3 × 420/20 = 3 × 21 = 63 | 440 × 3/20 = 3 × 440/20 = 3 × 22 = 66 |
| 181 | Bottom | #19 explanation | 45 × 89 = 2,205 | 45 × 89 = 4,005 |