Intermediate Math: Decimals
Click on the document below to print out the tracking sheet you will use to guide you through the Decimals unit.
Introduction


Concept/Skill  Sample  Learn Zillion  Khan Academy  Breakthrough to Math, Level 2, Book 4  Foundations Mathematics  Number Power 2  Breakthrough to Math, Workbook  WorkWise: Math at Work 
What are Decimals? 
0.78 is less than 1. It is 7 tenths and 8 hundredths. 
612  99103  6265 
Problem Solving


Concept/Skill  Sample  YouTube  Learn Zillion  Khan Academy  Breakthrough to Math, Level 2, Book 4  Foundations Mathematics  Number Power 2  Breakthrough to Math, Workbook  WorkWise: Math at Work 
Word Problems with Adding Decimals 
If you buy an adult movie ticket for $9.25 and a child movie ticket for $5.50, how much will you spend all together?  17 
74 

Word Problems with Subtracting Decimals  How much change will you get if you pay $25 and the total was $24.36?  Word ProblemDecimal Subtraction  77  
Subtracting a Decimal from a Whole Number  
Word Problems with Multiplying Decimals  If you want to buy 50 ballons for a party and each one costs $3.27, how much will the balloons cost?  Word ProblemsMultiplying Decimals 
8485 Complete Problems: 111, 13, 16 

Multiplying DecimalsSolving Word Problems  
Multiplying DecimalsCalculating Weekly Wages  
Word ProblemsDecimal Multiplication  
Multiplying Decimals Word Problem  
Word Problems with Dividing Decimals  If you are going to pay $153.24 a month until you pay off a bill of $2,514.16, how many payments will you make altogether?  Decimal DivisionWord Problems  9293  
Dividing DecimalsWord Problem  
Dividing a Decimal by a Decimal Word Problem  
Word Problems with Decimals and Mixed Operations 
Ellen wants to buy the following items:
1. A DVD player for
$49.95
2. A DVD for $19.95
3. Headphones for $21.95

Word ProblemsDecimal Operations Practice  Rational number word problem: school report  120121  4855: Exercises 17  
Rational number word problem: cab  
Concept/Skill  Sample  YouTube  Learn Zillion  Khan Academy  Breakthrough to Math, Level 2, Book 4  Foundations Mathematics  Number Power 2  Breakthrough to Math, Workbook  WorkWise: Math at Work 

Calculations


Concept/Skill  Sample  Learn Zillion  Khan Academy 
Breakthrough to Math, Level 2, Book 4 
Foundations Mathematics  Number Power 2  Breakthrough to Math, Workbook  WorkWise: Math at Work 
Adding Decimals 
2.34 + 74. 01 = 76.35 
Adding Decimals  1315, 20  110  73  27  
Adding decimals with hundredths  
Adding decimals: 9.087 + 15.31  
Adding decimals: 0.822 + 5.65  
Adding three decimals  
Subtracting Decimals  13.21  7.58 = 5.63  Subtracting Decimals: 9.005  3.6  2123 
111 
75  28  
Subtracting decimals 39.1  0.794  
Subtracting decimals 9.57  8.09  
Subtracting decimals 10.1  3.93  
Multiplying Decimals  3.29 x 4.1 = 13.489  Multiplying Decimals example  2426  112114  7981  29  
Multiply multidigit decimals using the standard algorithm  Multiplying decimals: place value  
Multiplying challenging decimals  
Multiplying and Dividing Decimals by 10, 100, 1000  0.23 x 1,000=230  Multiply decimals by a power of 10  Multiplying a decimal by a power of 10 
2728 4142 
115 119 
82 90 
30 34 

Dividing a decimal by a power of 10  
Dividing a decimal by a power of 10: pattern  
Dividing Decimals by Whole Numbers  Dividing a decimal by a whole number  3032  116  86  31  
Dividing Whole Numbers by Decimals 

3336  89  32  
Dividing Decimals by Decimals  Dividing decimals with hundredths  3740  117118  8788  33  
Dividing decimals completely  
Long division with decimals  
Dividing by a multidigit decimal  
Rounding off Decimals  0.7892 rounded to the nearest hundredth is 0.79  Worked example: rounding decimals to the nearest tenth  4345  107  7172  35  
Rounding decimals on a number line  
Concept/Skill  Sample  Learn Zillion  Khan Academy 
Breakthrough to Math, Level 2, Book 4 
Foundations Mathematics  Number Power 2  Breakthrough to Math, Workbook  WorkWise: Math at Work 

Conversions
Concept/Skill  Sample  Learn Zillion  Khan Academy  Breakthrough to Math, Level 2, Book 5  Foundations Mathematics  Number Power 2  Breakthrough to Math, Workbook  WorkWise: Math at Work 
Converting Decimals to Fractions  0.6 = 3/5  Rewriting decimals as fractions: 0.08 
15, Exercise 3B only 
138, Exercise 4 only  
Rewriting decimals as fractions: 0.36  
Decimal to simplified fraction  
Converting Fractions to Decimals  3/5 = 0.6  Converting fractions into decimals to the tenths place  Fraction to decimal: 11/25  4648  138, Exercise 5 only  6869  36  
Converting fractions into decimals to the hundredths place  Worked example: Converting a fraction (7/8)  
Converting fractions and mixed numbers to decimals 
Problem Solving PostTest
Click here for the Adding and Subtracting Word Problems PostTest.
See the Program Staff for a copy of the Multiplying, Dividing, and Mixed Operations Word Problems PostTest.
Calculations PostTest
1. In the Breakthrough to Math, Level 2, Book 4, complete the PostTest on page 49. You may NOT use a calculator for this test. 

2. Answers can be found on page 50 

3. A passing score is 11 out of 13. 