Math 20 Math 25 Math Tips davidvs.net

# Math 20 Textbook Homework

## Shapeshifting Homework

### Rounding

#### Decimal Accuracy

Section 1.1 (Page 8) # 43, 45

Section 1.6 (Page 43) # 1, 5, 11, 13, 17, 21

Section 4.1 (Page 222) # 53, 55, 57, 61, 65, 69, 71

Section 4.5 (Page 255) # 49

#### Estimating

Section 1.6 (Page 43) # 25, 35, 47, 69

Section 4.6 (Page 262) # 1, 3, 17, 19, 21, 23

### Fraction Format

Section 1.5 (Page 32) # 1, 3, 5, 7, 9, 11

#### Divisibility and Factors

Section 2.1 (Page 91) # 5, 7, 29, 31, 49, 53, 57, 61

Section 2.2 (Page 97) # 1, 3, 5, 7, 9, 11, 13

Section 4.1 (Page 222) # 93

#### Desired Denominators

Section 2.5 (Page 120) # 1, 3, 5, 7, 15, 21, 25, 33

#### Decimals and Fractions

Section 4.1 (Page 251) # 9, 11, 15, 17, 21, 23, 25

Section 4.5 (Page 255) # 1, 3, 5, 7, 9, 11, 17, 21, 25, 27

#### Ratios and Rates

Section 2.3 (Page 104) # 25, 41

Section 5.1 (Page 290) # 13, 19, 21, 25, 27, 35, 37, 39

Section 5.2 (Page 296) # 1, 3, 7, 9, 11, 17, 21, 31, 47

### Percent Format

#### Decimal Point Scoots

Section 4.3 (Page 235) # 9, 11, 13, 15, 17, 19

Section 4.4 (Page 245) # 37, 39, 41, 43, 45, 47

#### Four Replacements for %

Section 6.1 (Page 341) # RC1, RC3, 1, 3

#### Percents, Decimals, and Fractions

Section 6.1 (Page 342) # 7, 13, 15, 19, 21, 22, 27, 35, 37, 45, 47, 69, 71, 73

Section 6.2 (Page 349) # 1, 3, 11, 15, 17, 19, 25, 27, 37, 39, 41, 43, 45, 47, 49, 55, 57, 59, 61, 73, 79, 81

Section 8.4 (Page 479 or 501) # 65, 67

### Measurement

#### Units and Their History

Section 8.2 (Page 467 or 489) # 57, 59

#### One Step Conversions

Section 8.1 (Page 460 or 482) # 1, 3, 5, 9, 15, 19, 21, 29, 35

Section 8.3 (Page 470 or 493) # 1, 3, 5, 7, 9, 11, 23, 25, 27, 29

Section 8.4 (Page 479 or 501) # 3, 5, 9, 11

Section 8.5 (Page 486 or 508) # 13, 15, 25

Section 8.2 (Page 467 or 489) # 1, 5, 11, 23, 33, 35, 37, 39, 43, 45

Section 8.4 (Page 479 or 501) # 15, 19, 21, 27, 33, 35, 37, 73

Section 8.5 (Page 486 or 508) # 3, 5, 7, 13, 25, 65

#### Exponents and Square Roots

Section 8.7 (Page 498 or 520) # 1, 5, 7, 13, 15, 23, 33

Section 9.1 (Page 513 or 535) # 23, 25, 27

Section 9.6 (Page 561 or 583) # 1, 5, 9, 13, 17, 21, 25

### Fractions

#### Fraction × and ÷

Section 2.6 (Page 126) # 3, 5, 11, 17, 41, 43

Section 2.7 (Page 135) # 9, 11, 13, 17, 21

Section 5.2 (Page 296) # 1, 3, 7, 9, 11, 17, 21, 31

#### Fraction + and −

Section 3.1 (Page 151) # 3, 5, 7, 9, 17, 21

Section 3.2 (Page 157) # 3, 5, 7, 11, 15, 21, 27, 31, 33

Section 3.3 (Page 165) # 3, 5, 7, 9, 11, 15, 17, 27, 31, 35

#### Mixed Number Subtraction

Section 3.4 (Page 171) # 5, 7, 9, 33, 35, 37

Section 5.1 (Page 290) # 13, 19, 21, 25, 27, 35, 37, 39, 45, 51, 53

#### Order and Terms

Section 4.4 (Page 245) # 55, 57, 65, 67, 69, 71, 73

### Percentages

(none)

#### Percent Change

Section 6.5 (Page 375) # 25, 26, 27, 28, 31, 37, 39

Section 8.4 (Page 479 or 501) # 69

(none)

#### Simple Interest

Section 6.7 (Page 396) # 1, 3, 5, 9, 11, 35, 37

### Measurement

#### Unit Analysis

Section 8.1 (Page 460 or 482) # 7, 26, 27, 33, 35, 36, 47

Section 8.5 (Page 486 or 508) # 11, 65

#### Polygon Perimeter and Area

Section 9.1 (Page 513 or 535) # 1, 3, 5, 7, 9, 13, 15, 19, 31

Section 9.2 (Page 521 or 543) # 3, 5, 13, 17, 21, 23, 27, 28, 29, 30, 33

#### Circle Circumference and Area

Section 9.3 (Page 531 or 553) # 1, 5, 10

## Justice Homework

### Fractions

#### One Step Equations

Section 1.7 (Page 52) # 5, 7, 9, 11, 13, 15, 19, 21, 23, 25, 31, 45, 55

Section 2.2 (Page 52) # 41, 45

Section 2.7 (Page 135) # 33, 35, 37, 39

Section 4.2 (Page 227) # 49, 53

Section 4.4 (Page 245) # 49, 51, 53

Section 9.3 (Page 531 or 553) # 13

#### Proportions and Cross Multiplying

Section 5.3 (Page 304) # 1, 5, 7

#### Proportions with Variables

Section 5.3 (Page 304) # 11, 25, 43, 47, 49, 67, 69

#### Proportion Word Problems

Section 5.4 (Page 315) # 1, 3, 5, 9, 12, 13, 19, 29, 31, 33

#### Scale Factors

Section 5.5 (Page 324) # 1, 3, 5, 7, 9, 15, 17, 27

### Percentages

#### Percent Sentences

Section 6.3 (Page 357) # 1, 2, 3, 4, 5, 7, 13, 15, 21, 25, 27, 31, 37, 39, 43

Section 6.4 (Page 363) # 1, 2, 3, 5, 6, 13, 15, 21, 25, 27, 29, 31, 35, 37, 43

#### Percent Word Problems

Section 6.5 (Page 375) # 3, 5, 11, 23

Section 6.6 (Page 386) # 1, 5, 9, 11, 19, 21, 23, 33, 35, 37, 39, 41, 51

Section 6.7 (Page 396) # 35, 37

(none)

### Measurement

#### Temperature

Section 8.6 (Page 493 or 515) # 27, 33, 37, 47, 49

#### Area Puzzles

Section 9.2 (Page 521 or 543) # 35, 39, 43, 45, 67

Section 9.3 (Page 531 or 553) # 17, 19, 21, 27, 29, 35, 37

#### Variables and Negatives

(we do not do any)