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
[latex]97+74=171[/latex]
Question 2
[latex]128+456=584[/latex]
Chapter 3: Subtracting Whole Numbers
Question 1
[latex]94-62=32[/latex]
Question 2
[latex]434-78=356[/latex]
Chapter 4: Multiplying Whole Numbers
Question 1
[latex]522\times196=102,312[/latex]
Question 2
[latex]647\times381=246,507[/latex]
Chapter 5: Dividing Whole Numbers
Question 1
[latex]130÷8=16\dfrac{1}{4}[/latex]
Question 2
[latex]684÷12=57[/latex]
Fractions
Chapter 7: The Basics of Fractions
Practice Question A
[latex]\dfrac{27}{8}[/latex]
Practice Question B
[latex]5\dfrac{2}{3}[/latex]
Question 1
[latex]\dfrac{5}{6}[/latex]
Question 2
[latex]\dfrac{2}{3}[/latex]
Chapter 8: Adding and Subtracting Fractions
Question 1
[latex]\dfrac{13}{16}[/latex]
Question 2
[latex]\dfrac{5}{16}[/latex]
Question 3
[latex]1\dfrac{3}{8}[/latex]
Question 4
[latex]4\dfrac{3}{8}[/latex]
Question 1 (Mixed numbers)
[latex]11\dfrac{1}{2}[/latex]
Question 2 (Mixed numbers)
[latex]6\dfrac{5}{16}[/latex]
Question 3 (Mixed numbers)
[latex]7\dfrac{3}{8}[/latex]
Question 4 (Mixed numbers)
[latex]\dfrac{11}{16}[/latex]
Chapter 9: Multiplying Fractions
Question 1
[latex]\dfrac{3}{14}[/latex]
Question 2
[latex]\dfrac{10}{33}[/latex]
Question 3
[latex]35\dfrac{1}{16}[/latex]
Question 4
[latex]65\dfrac{53}{63}[/latex]
Chapter 10: Dividing Fractions
Question 1
[latex]2[/latex]
Question 2
[latex]1\dfrac{17}{22}[/latex]
Decimals
Chapter 13: Compare and Round Decimals
Question 1
[latex]\text{b. }27.54[/latex]
Question 2
[latex]\text{a. }14.001[/latex]
Question 1 (Rounding)
[latex]27.72[/latex]
Question 2 (Rounding)
[latex]14.756[/latex]
Chapter 14: Convert Decimals to Fractions
Question 1
[latex]\dfrac{181}{500}[/latex]
Question 2
[latex]\dfrac{963}{1000}[/latex]
Question 1 (Convert feet)
[latex]9.1234'\text{ or }9'\text{ }1\dfrac{1}{2}''[/latex]
Question 2 (Convert feet)
[latex]\dfrac{11}{16}\text{ inches}[/latex]
Chapter 15: Convert Fractions to Decimals
Question 1
[latex]2.21'[/latex]
Question 2
[latex]2'[/latex]
Percentages
Practice Question
[latex]26.7\%[/latex]
Question 1
[latex]70\%[/latex]
Question 2
[latex]80\%[/latex]
Question 3
[latex]20\%[/latex]
Chapter 19: Finding the percentage of a Given Number
Question 1
[latex]84.73[/latex]
Question 2
[latex]1503.84[/latex]
Chapter 20: Change as a Percent and Percent Change
Question 1 (Change as a percent)
[latex]83\%[/latex]
Question 2 (Change as a percent)
[latex]17.3\%[/latex]
Question 1 (Percent change)
[latex]48\text{ plants}[/latex]
Question 2 (Percent change)
[latex]30\text{ touchdowns}[/latex]