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

$522\times 196=102,312$

Question 2

$647\times 381=246,507$

Chapter 5: Dividing Whole Numbers

Question 1

$130÷8=16{\displaystyle \frac{1}{4}}$

Question 2

$684÷12=57$

Fractions

Chapter 7: The Basics of Fractions

Practice Question A

${\displaystyle \frac{27}{8}}$

Practice Question B

$5{\displaystyle \frac{2}{3}}$

Question 1

${\displaystyle \frac{5}{6}}$

Question 2

${\displaystyle \frac{2}{3}}$

Chapter 8: Adding and Subtracting Fractions

Question 1

${\displaystyle \frac{13}{16}}$

Question 2

${\displaystyle \frac{5}{16}}$

Question 3

$1{\displaystyle \frac{3}{8}}$

Question 4

$4{\displaystyle \frac{3}{8}}$

Question 1 (Mixed numbers)

$11{\displaystyle \frac{1}{2}}$

Question 2 (Mixed numbers)

$6{\displaystyle \frac{5}{16}}$

Question 3 (Mixed numbers)

$7{\displaystyle \frac{3}{8}}$

Question 4 (Mixed numbers)

${\displaystyle \frac{11}{16}}$

Chapter 9: Multiplying Fractions

Question 1

${\displaystyle \frac{3}{14}}$

Question 2

${\displaystyle \frac{10}{33}}$

Question 3

$35{\displaystyle \frac{1}{16}}$

Question 4

$65{\displaystyle \frac{53}{63}}$

Chapter 10: Dividing Fractions

Question 1

$2$

Question 2

$1{\displaystyle \frac{17}{22}}$

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

${\displaystyle \frac{181}{500}}$

Question 2

${\displaystyle \frac{963}{1000}}$

Question 1 (Convert feet)

${9.1234}^{\prime }\text{ or }{9}^{\prime }1{{\displaystyle \frac{1}{2}}}^{″}$

Question 2 (Convert feet)

${\displaystyle \frac{11}{16}}\text{ inches}$

Chapter 15: Convert Fractions to Decimals

Question 1

${2.21}^{\prime }$

Question 2

$2^{\prime }$

Percentages

Practice Question

$26.7\mathrm{\%}$

Question 1

$70\mathrm{\%}$

Question 2

$80\mathrm{\%}$

Question 3

$20\mathrm{\%}$

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)

$83\mathrm{\%}$

Question 2 (Change as a percent)

$17.3\mathrm{\%}$

Question 1 (Percent change)

$48\text{ plants}$

Question 2 (Percent change)

$30\text{ touchdowns}$