# Main Page

## Problem Solving

 Module 2 Problem Solving 1 Unit 0 Introduction Unit 1 Buses, Passengers, and Folders Unit 2 Sum of Primes Unit 3 Generating a Non-Integer Unit 4 Family Savings Unit 5 Equal Rectangular Areas Unit 6 Radical and Power Module 3 Problem Solving 2 Unit 0 Ways to Solve Unit 1 Lecture Hall Seats Unit 2 Rectangular Floor Unit 3 Fractions of Inventory Unit 4 One-Tenth Percent Unit 5 Absolute Value on Number Line Unit 6 Fresh Fish Average of Averages Unit 7 Identification Numbers Module 4 Problem Solving 3 Unit 1 Commission on Sales Unit 2 Volume of Two Boxes Unit 3 30th Digit Unit 4 Absolute Value Inequality Unit 5 Machines and Combined Rate Unit 6 Teams Finishing Foot Race Unit 7 Powers of Tenth Module 5 Problem Solving 4 Unit 1 Percent of a Number Unit 2 Day Shift and Night Shift Unit 3 Import Taxes Unit 4 Prime Number and Remainder Unit 5 Points in Coordinate Plane Unit 6 Ratio with a Fraction Unit 7 Average with Additional Item Module 6 Problem Solving 5 Unit 1 Subtracting Compound Fractions Unit 2 Piles of Coins Unit 3 Graph of Hours Worked Unit 4 Percent Increases and Decreases Unit 5 Simplifying Radicals Unit 6 Driving at a Constant Rate Unit 7 Jay's Painting Rate Module 7 Problem Solving 6 Unit 1 Algebraic Equivalence Unit 2 Quotients of Positive and Negative Numbers Unit 3 Fractions, Decimals and Denominators Unit 4 Variable in a Denominator Unit 5 Dates at a Wedding Reception Unit 6 Angles and Fractions of a Circle Unit 7 Least Common Multiple Module 8 Problem Solving 7 Unit 1 Cannot Be Odd Unit 2 Bisecting a Line Unit 3 Estimating Sum of Fractions Unit 4 Fraction Subtraction Unit 5 Possible Absolute Values Unit 6 Difference in Distances over Time Unit 7 Other Solution of a Quadratic Equation Module 9 Problem Solving 8 Unit 1 Two Equations Plus One Condition Unit 2 Integers Within an Inequality Unit 3 Comparing Two Averages Unit 4 Men and Women Assigned to Projects Unit 5 Ratios of Marbles Unit 6 Summing Radicals Unit 7 Bucket of Rainwater Module 10 Problem Solving 9 Unit 1 Spending Cash Reserves Unit 2 Volumes of a Solution Unit 3 Equation of a Line Unit 4 Slope of a Line Unit 5 Angles of a Parallelogram Unit 6 Carrots and Onions Purchased Unit 7 Serving Size, Price and Revenue Module 11 Problem Solving 10 Unit 1 Converting Units Unit 2 Comparing Mean and Median Unit 3 Visible Stars in the Night Sky Unit 4 Circle in the Coordinate Plane Unit 5 Distance to the Moon Unit 6 Probability of Pairs of Draws Unit 7 Ratios of Children Module 12 Problem Solving 11 Unit 1 Needless Variable Unit 2 Comparing Car Counts at a Location Unit 3 Rotating a Square Unit 4 Combining Inequalities Unit 5 Divisibility into Paperclip Piles Unit 6 Ratio of Profits Unit 7 Volume from Area Module 13 Problem Solving 12 Unit 1 Time to Turn Around Unit 2 Team Award Unit 3 Divisibility of a Large Number Unit 4 Fraction of Many Decimals Unit 5 Estimating a Sum of Many Fractions Unit 6 Compound Interest Unit 7 A Difference and a Total Module 14 Problem Solving 13 Unit 1 A Machine's Rate of Production Unit 2 Algebraic Divisibility by 3 Unit 3 Combined Rate of Nail-Producing Machines Unit 4 Decline in a Road Unit 5 Ernesto and His Wife's Ages Unit 6 Gross Profit per Light Bulb Unit 7 Revenue from Sweaters Module 15 Problem Solving 14 Unit 1 Consecutive Odd Integers Unit 2 Remainder and Fractional Portion Unit 3 Two Quadratic Equations Unit 4 Algebraic Manipulation of a Median Unit 5 Arithmetic with Fractions Unit 6 Percent Decrease in Value Unit 7 Earthquake Strength Module 16 Problem Solving 15 Unit 1 Contaminated Volume in a Tank Unit 2 People Registered to Vote Unit 3 Changing an Apples-to-Oranges Ratio Unit 4 Scanning the Pages of a Book Unit 5 The Diagonal of a Square Unit 6 Insect Population Growth Unit 7 Ratio of Mean to Median Module 17 Problem Solving 16 Unit 1 Teachers Aged 30+ Unit 2 Linear Equations with Fractions Unit 3 Maximum Divisors Unit 4 Comparing Exponents Unit 5 Counting Zeroes Unit 6 Charnge in Sales Ratio Unit 7 Factor of a Large Product Module 18 Problem Solving 17 Unit 1 Monthly Customer Acquisition Unit 2 Symmetric Distribution Unit 3 Company Satisfaction Rate Unit 4 Finding a Non-Factor Unit 5 Ratio of Women to Men Unit 6 Seminar Overflow Unit 7 Overlapping Frames Module 19 Problem Solving 18 Unit 1 Inequalities with a Negative Fraction Unit 2 Ratio of a Cylinder's Dimensions Unit 3 Prime Number Manipulation Unit 4 Solving by Exponent Rules Unit 5 Arithmetic Sequence Unit 6 Unique Code System Unit 7 Stairway of Blocks Module 20 Problem Solving 19 Unit 1 Three Posts Unit 2 Combining Inequalities II Unit 3 Albert's Coins Unit 4 Operation Omega Unit 5 Dive Into a Pool of Water Unit 6 Comparing Medians Unit 7 Assigning Pairs Module 21 Problem Solving 20 Unit 1 Ed's Research Estimate Unit 2 Average Excluding Tax Unit 3 Unemployed Miners Unit 4 Doubling Investment Unit 5 Livestock per Capita Unit 6 Improper Fraction Unit 7 Combined Rate of Two Machines Module 22 Problem Solving 21 Unit 1 Number Line Segment Unit 2 Legal Service Billing Unit 3 Chris' Average Expenses Unit 4 Dimensions of a Window Unit 5 Increasing a Percent Unit 6 Rounded Weight and Actual Weight Unit 7 Custom Operation Module 23 Problem Solving 22 Unit 1 Percentage to Range Estimate Unit 2 Definition: Less Than or Equal To Unit 3 Eduardo's Heaviest Catches Unit 4 Surface Area of Tile Fragments Unit 5 Divisibility by Twice a Square Unit 6 Earnings per Team and per Member Unit 7 Possible Answers to a Survey Module 24 Problem Solving 23 Unit 1 Fraction with Repeating Decimals Unit 2 Sum of Sit-Ups Over a Year Unit 3 A Projectile Falls Short Unit 4 Frederique's Trip Unit 5 Units Digit of an Exponent Unit 6 Value of Quadratic Expression Unit 7 Trapezoid and Circle Module 25 Problem Solving 24 Unit 1 Powers of Negative 1 Unit 2 Recursive Sequence Unit 3 Nested Rectangles Unit 4 Area of Irregular Shape Unit 5 A Painting Machine's Rate Unit 6 Operations on Unknown Number Unit 7 Salt Solution Module 26 Problem Solving 25 Unit 1 Counting Prime Number Factors Unit 2 Circular Garden and Circular Statue Unit 3 John's and Janice's Age Unit 4 Counting Nonzero Digits Unit 5 Sum of Many Odd Integers Unit 6 The Probability of a Blue Ball Unit 7 Change in Health Care Cost per Employee Module 27 Problem Solving 26 Unit 1 Portions of Advanced Certification Unit 2 Impossible Value of k Unit 3 Retailer's Profit on Items Ordered Unit 4 Employees from England and Japan Unit 5 Negative Exponents of Negative Fractions Unit 6 Percent of x Unit 7 Quadratic Inequality Module 28 Problem Solving 27 Unit 1 Molecules of Carbon Dioxide in a Sample Unit 2 Jenna's Children Unit 3 Linear Equation with Variable in Denominator Unit 4 Beginning and End of a Season Unit 5 Restaurant Reviews - Overlapping Sets Unit 6 Terms in a Closed-Form Sequence Unit 7 Quadratic Equation Module 29 Problem Solving 28 Unit 1 Skiing Club Members...and the Whole Class Unit 2 Nine Audio Recordings Unit 3 Citizenship Survey Unit 4 Probability of a Product Unit 5 Suggestive Fraction Unit 6 Overlapping Sets - Questions Answered Correctly Unit 7 Probability of Coin Tosses Module 30 Problem Solving 29 Unit 1 Distances in the Coordinate Plane Unit 2 Decreasing with y Unit 3 Students per Class Unit 4 Distance within a Box Unit 5 Distribution of Charitable Donation Unit 6 Average with New Element Unit 7 Ratio of Substances in a Solution Module 31 Problem Solving 30 Unit 1 Non-Prime Divisors of n Unit 2 Triangle in the Coordinate Plane Unit 3 Approaching Cars Unit 4 Equation of Line L Unit 5 Substitution Into an Expression Unit 6 Tangent Circle Unit 7 Game with Six-Sided Die Module 32 Problem Solving 31 Unit 1 Interior and Exterior Angles of Triangle Unit 2 Non-Linear Equation Unit 3 Exchanging Digits Unit 4 Three Product Launches Unit 5 Solving for x in Compound Fraction Unit 6 Thermal Resistances Unit 7 Students Who Got Both Questions Correct Module 33 Problem Solving 32 Unit 1 Differing Powers and Denominators Unit 2 Mixture of Spices Unit 3 Possible Values of y Unit 4 Game with Cards and Point Values Unit 5 Properties of Consecutive Even Integers Unit 6 Minutes of Courtyard Bell Unit 7 Even and Odd Properties of Algebraic Expression Module 34 Problem Solving 33 Unit 1 Circles Within a Square Unit 2 Fraction of Decimals and Exponents Unit 3 Multiple of an Exponent