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Unit 2: Solving equations with one unknown
About this unit.
Let's take your equationsolving skills to the next level! You'll learn all the strategies you need to confidently tackle problems with variables on both sides, parentheses, and more. Plus, you'll get plenty of practice with word problems to really solidify your understanding.
Equations with variables on both sides
 Intro to equations with variables on both sides (Opens a modal)
 Equations with variables on both sides: 207x=6x6 (Opens a modal)
 Equation with variables on both sides: fractions (Opens a modal)
 Equation with the variable in the denominator (Opens a modal)
 Equations with variables on both sides Get 3 of 4 questions to level up!
 Equations with variables on both sides: decimals & fractions Get 3 of 4 questions to level up!
Equations with parentheses
 Equations with parentheses (Opens a modal)
 Multistep equations review (Opens a modal)
 Equations with parentheses Get 3 of 4 questions to level up!
 Equations with parentheses: decimals & fractions Get 3 of 4 questions to level up!
Number of solutions to equations
 Number of solutions to equations (Opens a modal)
 Worked example: number of solutions to equations (Opens a modal)
 Creating an equation with no solutions (Opens a modal)
 Creating an equation with infinitely many solutions (Opens a modal)
 Number of solutions to equations Get 3 of 4 questions to level up!
 Number of solutions to equations challenge Get 3 of 4 questions to level up!
Equations word problems
 Sums of consecutive integers (Opens a modal)
 Sum of integers challenge (Opens a modal)
 Solving equations with one unknown: FAQ (Opens a modal)
 Sums of consecutive integers Get 3 of 4 questions to level up!
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Big Ideas Math Common Core 8th Grade, Grade: 8 Publisher: Holt McDougal; Student edition
Big ideas math common core 8th grade, title : big ideas math common core 8th grade, publisher : holt mcdougal; student edition, isbn : 1608402266, isbn13 : 9781608402267, use the table below to find videos, mobile apps, worksheets and lessons that supplement big ideas math common core 8th grade..
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Math Books  Grade 8
Grade 8 HMH Go Math  Answer Keys
Year Published: 2017
Description: Florida Common Core Standard Practice
Grade 8 McGraw Hill Glencoe  Answer Keys
Year Published: 2019
Description: Grade 8 McGraw Hill Glencoe  Answer Keys
What is Common Core
The Common Core is a set of highquality academic standards in mathematics and English language arts/literacy (ELA).
These learning goals outline what a student should know and be able to do at the end of each grade.
Learn more »
What Parents Should Know
Today’s students are preparing to enter a world in which colleges and businesses are demanding more than ever before.
To ensure all students are ready for success after high school, the Common Core State Standards establish clear, consistent guidelines for what every student should know and be able to do in math and English language arts from kindergarten through 12th grade.
Common core  Common mistakes
Use the repeatedaddition strategy to solve 5x3.
If you answer the question with 5+5+5=15, you would be wrong.
The correct answer is 3+3+3+3+3.
Mathematically, both are correct. But under Common Core, you're supposed to read 5x3 as "five groups of three." So "three groups of five" is wrong.
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Featured problem of the day
Family passes to an amusement park cost $54 each.
Which expression can be used to find the cost in dollars of 8 family passes?
 A. (8+50) + (8+4)
 B. (8+50) x (8+4)
 C. (8x50) + (8x4)
 D. (8x50) x (8x4)
Explanation:
Explanation : to solve this problem, we use the distributive property of multiplication.
54 can be rewriten as (50+4), hence:
54x8=(50+4)x8=50x8+4x8
 > >

Chapter 1, Lesson 1: A Plan for Problem Solving
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Curriculum / Math / 8th Grade / Unit 2: Solving OneVariable Equations / Lesson 10
Solving OneVariable Equations
Lesson 10 of 12
Criteria for Success
Tips for teachers, anchor problems, problem set, target task, additional practice.
Use equations to model a business plan and determine the breakeven point.
Common Core Standards
Core standards.
The core standards covered in this lesson
Expressions and Equations
8.EE.C.7 — Solve linear equations in one variable.
Foundational Standards
The foundational standards covered in this lesson
7.EE.B.4 — Use variables to represent quantities in a realworld or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities.
The essential concepts students need to demonstrate or understand to achieve the lesson objective
 Decontextualize a situation to represent it algebraically, and recontextualize to interpret the solution in context of the problem (MP.2).
 Write and solve equations to represent a realworld business plan (MP.4).
Suggestions for teachers to help them teach this lesson
There is only one Anchor Problem for this lesson, however, it is longer than usual. It can be done with the whole class, or students can tackle it in small groups. The Target Task has students create their own problem similar to the Anchor Problem. The Problem Set Guidance includes a variety of resources that involve realworld applications.
Unlock features to optimize your prep time, plan engaging lessons, and monitor student progress.
Problems designed to teach key points of the lesson and guiding questions to help draw out student understanding
2530 minutes
Corey and Akila are making small wooden tables to sell at the school fair. They have some fixed costs and some variable costs. The fixed costs come to $160 and include things that only need to be purchased once, like an electric saw, measuring tools, and a work station. The variable costs come to $3.50 for each table and include the wood, nails, and glue needed for each table. Corey and Akila plan to sell each table for $10.
a. Fill in the chart below for different numbers of tables sold at the school fair.
 
 
 

b. Write an equation to represent this situation. Explain what each part of your equation represents.
c. How many tables do Corey and Akila need to sell to break even?
d. How many tables do Corey and Akila need to sell to make a profit of $150?
Guiding Questions
A set of suggested resources or problem types that teachers can turn into a problem set
1520 minutes
Give your students more opportunities to practice the skills in this lesson with a downloadable problem set aligned to the daily objective.
A task that represents the peak thinking of the lesson  mastery will indicate whether or not objective was achieved
510 minutes
Create your own business model, similar to Anchor Problem 1.
 What are you selling?
 What are your fixed costs? Your variable costs?
 How much will you sell each item for?
 How many do you need to sell to break even?
Show all of your work clearly and include an equation in your answer.
Student Response
An example response to the Target Task at the level of detail expected of the students.
The following resources include problems and activities aligned to the objective of the lesson that can be used for additional practice or to create your own problem set.
 EngageNY Mathematics Grade 8 Mathematics > Module 4 > Topic A > Lesson 9 — Exercises 310, Problem Set 27
 EngageNY Mathematics Grade 8 Mathematics > Module 4 — MidModule Assessment (12)
Topic A: Simplifying Expressions and Verifying Solutions
Write equivalent expressions using properties of operations and verify equivalence using substitution.
Define a solution to an equation. Solve and check solutions to 1 and 2 step equations.
Create a free account to access thousands of lesson plans.
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Topic B: Analyzing and Solving Equations in One Variable
Justify each step in solving a multistep equation with variables on one side of the equation.
8.EE.C.7.A 8.EE.C.7.B
Write and solve multistep equations to represent situations, with variables on one side of the equation.
Model with equations using a threeact task.
Solve equations with variables on both sides of the equal sign.
Write and solve multistep equations to represent situations, including variables on both sides of the equation.
Understand that equations can have no solutions, infinite solutions, or a unique solution; classify equations by their solution.
Solve and reason with equations with three types of solutions.
Topic C: Analyzing and Solving Inequalities in One Variable
Solve and graph inequalities with variables on one side of the inequality (optional).
Solve and graph inequalities with variables on both sides of the inequality (optional).
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8th grade 7 units · 121 skills. Unit 1 Numbers and operations. Unit 2 Solving equations with one unknown. Unit 3 Linear equations and functions. Unit 4 Systems of equations. Unit 5 Geometry. Unit 6 Geometric transformations. Unit 7 Data and modeling. Course challenge.
These materials enable personalized practice alongside the new Illustrative Mathematics 8th grade curriculum. They were created by Khan Academy math experts and reviewed for curriculum alignment by experts at both Illustrative Mathematics and Khan Academy.
Find stepbystep solutions and answers to Ready Mathematics Practice and Problem Solving Grade 8  9781495704857, as well as thousands of textbooks so you can move forward with confidence.
Lessons 8 and 9 introduce students to the three types of solutions that an equation can have. This lesson focuses on students understanding what each solution means about the equation, and on becoming familiar with arriving at solutions that look like 4 = 2 or − 8 = − 8 (MP.2). In the next lesson, students will reason with all three types ...
Problem Solving • Comparison Problems with Addition and Subtraction Essential Question How can you use the strategy draw a diagramto solve comparison problems with addition and subtraction? Lesson 1.8
In grade 8, students model problem situations symbolically, graphically, tabularly, and contextually. Students form expressions, equations, or inequalities from real world contexts and connect symbolic and graphical representations. Students solve systems of linear equations and compare properties of functions provided in different forms.
Let's take your equationsolving skills to the next level! You'll learn all the strategies you need to confidently tackle problems with variables on both sides, parentheses, and more. Plus, you'll get plenty of practice with word problems to really solidify your understanding.
Use the table below to find videos, mobile apps, worksheets and lessons that supplement Big Ideas Math Common Core 8th Grade.
lopeFor Exercises 1. and 2, graph the data. Then find t. e. lope. Explain what the slope represents.1. ENVELOPES The table shows the nu. el. pes Stuffed306090120Time (min)2. ME. T There are 3 feet for every yard.Yards3. Use the graph that s. ows the number of laps comp.
Problem Solving REAL WORLD. Problem Solving REAL WORLD. Title. Go Math! Practice Book (TE), G5. Created Date. 9/10/2020 4:02:38 PM.
Find stepbystep solutions and answers to Algebra 1 Practice and Problem Solving Workbook  9780133688771, as well as thousands of textbooks so you can move forward with confidence.
Find stepbystep solutions and answers to enVision Algebra 1  9780328931576, as well as thousands of textbooks so you can move forward with confidence.
Common core  Common mistakes. Use the repeatedaddition strategy to solve 5x3. If you answer the question with 5+5+5=15, you would be wrong. The correct answer is 3+3+3+3+3. Mathematically, both are correct. But under Common Core, you're supposed to read 5x3 as "five groups of three." So "three groups of five" is wrong.
Topic 1: Exploring problemsolving strategies 1.1 CONSOLIDATION ACTIVITY For the following problems, work with your partner to rewrite the shape equations using letters as variables. You can decide which letters to use for your variables. Example: using shapes ax A 12 Equations using shapes o 13 7 Equations using shapes 0+0 = 24 Equations using letters Equations using letters Puzzle 1 Puzzle ...
Problem 3 (from Unit 1, Lesson 1) The rectangle seen in Frame 1 is rotated to a new position, seen in Frame 2. Select all the ways the rectangle could have been rotated to get from Frame 1 to Frame 2. 40 degrees clockwise. 40 degrees counterclockwise. 90 degrees clockwise. 90 degrees counterclockwise. 140 degrees clockwise.
The number of chaperones at a school field trip must be. 1. the. 5 number of students attending, plus the 2 teacher sponsors. Write. a rule for the number of chaperones that must be on the trip. Write ordered pairs to represent the number of chaperones that must attend the trip when there are 120, 150, 200, and 210 students.
GEOMETRY For Exercises 13, use the following information. = 6 2 models the area of a triangle with base 3x and height 4x. Graph the equation. Explain why you only need to graph the function in the upper right quadrant. 2. Explain how to find the area of the triangle when x = 3 inches. Then find the area. 3.
Math Connects: Concepts, Skills, and Problem Solving, Course 2 Chapter 1, Lesson 1: A Plan for Problem Solving
Textbook solutions for High School Math 2012 Commoncore Algebra 1 Practice And… 1st Edition Prentice Hall and others in this series. View stepbystep homework solutions for your homework. Ask our subject experts for help answering any of your homework questions!
Topic B: Analyzing and Solving Equations in One Variable. Justify each step in solving a multistep equation with variables on one side of the equation. Write and solve multistep equations to represent situations, with variables on one side of the equation. Model with equations using a threeact task.
a right angle. The sum of their measures is. 908. /FOE measures 58°, and /EOD measures 32°. Two angles wh. se measures add to 908 are complementary angles. omplementary angles don't have to. les.ABF 58° OC 58° S TED32°32°On the p.
Find the value of x in each figure. The first one is done for you.
19. about 1.2 billion 20. about 1.2 billion 21. about 0.3 in. Practice and Problem Solving: C 1. less than; 25% is equivalent to 25 or 100 1, a fraction less than 1 A number 4 multiplied by a fraction less than 1 gives a product less than the original number.