# Appendix B: Answers to Practice Questions

The answers to a practice questions that are provided in video walk-throughs have been duplicated here for easy reference.

# Whole Numbers

## Chapter 1: The Place Value System

### Question 1

3 = hundred millions
8 = ten millions
5 = millions
9 = hundred thousands
2 = ten thousands
2 = thousands
1 = hundreds
0 = tens
2 = ones

### Question 2

2 = ten billions
0 = billions
4 = hundred millions
3 = ten millions
3 = millions
8 = hundred thousands
7 = ten thousands
6 = thousands
0 = hundreds
1 = tens
1 = ones

## Chapter 2: Adding Whole Numbers

### Question 1

$97+74=171$

### Question 2

$128+456=584$

## Chapter 3: Subtracting Whole Numbers

### Question 1

$94-62=32$

### Question 2

$434-78=356$

## Chapter 4: Multiplying Whole Numbers

### Question 1

$522\times196=102,312$

### Question 2

$647\times381=246,507$

## Chapter 5: Dividing Whole Numbers

### Question 1

$130÷8=16\dfrac{1}{4}$

### Question 2

$684÷12=57$

# Fractions

## Chapter 7: The Basics of Fractions

### Practice Question A

$\dfrac{27}{8}$

### Practice Question B

$5\dfrac{2}{3}$

### Question 1

$\dfrac{5}{6}$

### Question 2

$\dfrac{2}{3}$

## Chapter 8: Adding and Subtracting Fractions

### Question 1

$\dfrac{13}{16}$

### Question 2

$\dfrac{5}{16}$

### Question 3

$1\dfrac{3}{8}$

### Question 4

$4\dfrac{3}{8}$

### Question 1 (Mixed numbers)

$11\dfrac{1}{2}$

### Question 2 (Mixed numbers)

$6\dfrac{5}{16}$

### Question 3 (Mixed numbers)

$7\dfrac{3}{8}$

### Question 4 (Mixed numbers)

$\dfrac{11}{16}$

## Chapter 9: Multiplying Fractions

### Question 1

$\dfrac{3}{14}$

### Question 2

$\dfrac{10}{33}$

### Question 3

$35\dfrac{1}{16}$

### Question 4

$65\dfrac{53}{63}$

## Chapter 10: Dividing Fractions

### Question 1

$2$

### Question 2

$1\dfrac{17}{22}$

# Decimals

## Chapter 13: Compare and Round Decimals

### Question 1

$\text{b. }27.54$

### Question 2

$\text{a. }14.001$

### Question 1 (Rounding)

$27.72$

### Question 2 (Rounding)

$14.756$

## Chapter 14: Convert Decimals to Fractions

### Question 1

$\dfrac{181}{500}$

### Question 2

$\dfrac{963}{1000}$

### Question 1 (Convert feet)

$9.1234'\text{ or }9'\text{ }1\dfrac{1}{2}''$

### Question 2 (Convert feet)

$\dfrac{11}{16}\text{ inches}$

## Chapter 15: Convert Fractions to Decimals

### Question 1

$2.21'$

### Question 2

$2'$

# Percentages

### Practice Question

$26.7\%$

### Question 1

$70\%$

### Question 2

$80\%$

### Question 3

$20\%$

## Chapter 19: Finding the percentage of a Given Number

### Question 1

$84.73$

### Question 2

$1503.84$

## Chapter 20: Change as a Percent and Percent Change

### Question 1 (Change as a percent)

$83\%$

### Question 2 (Change as a percent)

$17.3\%$

### Question 1 (Percent change)

$48\text{ plants}$

### Question 2 (Percent change)

$30\text{ touchdowns}$