Curated OER
Looking Through the Algebraic Lens
Students work with rectangles to find generalizations for adding and subtracting odd and even numbers in part one of the lesson. In part two, students use geoboards to construct polygons, look for patterns, and find a general rule.
Curated OER
Adding and Subtracting Fractions with Like and Unlike Denominators
In this math worksheet, students compute with fractions. Five of the problems involve common denominators. Four of the problems require students to first find the common denominator. Six problems are multiple choice. One problem involves...
Curated OER
Subtracting Fractions with Like Denominators
Students subtract fractions containing common denominators. In this algebra lesson, students drill themselves about the concept of being able to subtract fractions when the denominators are the same. This assignment contains positive and...
Curated OER
Subtracting Fraction with Like Denominators
Learners subtract fractions with like denominators. In this algebra lesson, students subtract fractions reinforcing the rules of fractions when the denominators are not the same. Negative and positive answers are part of the simplification.
Curated OER
Subtracting Fractions with Unlike Denominators
Students solve fractions using subtractions and. In this algebra lesson, students use the correct steps to solve fractions with unlike denominators when adding and subtracting. They solve by finding a common denominator and simplify to...
Curated OER
Plaster and Vermiculite Carving
Provide your class with the opportunity to experience the design process and subtractive sculpture. You mix vermiculite and plaster to create a soft variable material. Learners use this material to carve any abstract art form they...
Curated OER
Wallflowers: Adding and Multiplying Integers
Students solve word problems in which they add, subtract, multiply, and/or divide integers, identify rules and patterns for multiplying and dividing integers, create scenarios that represent each expression, and evaluate expressions.
Curated OER
Matrix Operations
Two real-world activities to practice adding, subtracting and multiplying matrices to problem solve. Data from several Pro football quarterbacks is used in one activity to make some predictions based on their stats. Then the class takes...
EngageNY
Sums and Differences of Decimals
Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth lesson in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first converting to decimals....
Curated OER
Comparing Apples With Apples 1
Elementary schoolers observe and demonstrate how to add and subtract fractions with like denominators. They observe the teacher model a variety of fraction addition and subtraction problems and use fraction strips to complete a worksheet.
Curated OER
Integers Homework #1
In this simple worksheet, learners add and subtract positive and negative integers. Mathematicians plot the problem on a number line beside each of the 24 problems. You might want to white out the answers at the bottom of each page and...
Curated OER
Matrix Madness!!
Perform operations to add, subtract, multiply and divide matrices. Then solve problems with vectors using matrices. A three day lesson: Matrix Madness, Mystical Matrices, and Decode the Encode. The last lesson has prizes that the class...
Illustrative Mathematics
Margie Buys Apples
One of the most common, everyday applications of math is dealing with money. This single problem calculating how much change Margie receives is more involved than it appears at first glance. An understanding of how fractions and decimals...
Curated OER
Adding and Subtracting Polynomials Using Algebra Tiles
Students add and subtract polynomials. In this algebra lesson, students use algebra tiles to perform operation of polynomials. They model their problems and understand how to combine like terms using tiles.
Curated OER
Subtracting Monomials and Polynomials
Students subtract monomials and polynomials by combining like terms. In this advanced subtraction lesson, students define the rules and properties for subtraction of polynomials. They apply the rules for addition to help with the rules...
Curated OER
Adding and Subtracting Fractions
In this adding and subtracting fractions worksheet, learners solve 5 sets of problems related to the adding and subtracting of fractions. First, they identify that each fraction has a common denominator and then simplify by adding or...
Curated OER
Adding and Subtracting Money
Students investigate U.S. currency by pretending to buy food. In this money lesson, students discover the vocabulary and value for each U.S. coin, then add the amounts in dollars and cents of food items they wish to purchase. Students...
Curated OER
Piecing it Together: Adding & Subtracting Fractions
Students add and subtract fractions and mixed numbers with unlike denominators. They "fish" for and solve a number of fraction problems requiring adding, subtracting, finding equivalent fractions, and using mixed numbers.
Curated OER
Initial Fraction Ideas Lesson 21: Overview
Students become familiar with the process of subtracting fractions. In this subtracting fractions lesson, students complete examples and then write a story problem. Students continue to practice while sharing their problems.
Curated OER
Do I Add? or Subtract?
Fourth graders read a book. In this word problems lesson plan, 4th graders review the operations addition and subtraction, read the book Sea Sums, learn strategies for determining if they should add or subtract, and solve story problems,
Buffalo State
Adding and Subtracting Integers Unit
Just because one integer is larger than another doesn't mean it will make sense right away. Go beyond note taking and show learners, through the use of algebra tiles and a Four-Pan Algebra Balance, how the numbers relate to one another...
Curated OER
Arithmetic: Fractions and Percentages
Young mathematicians review the basic operations needed for addition and subtraction of fractions. They review the rules for addition and subtraction of fractions with the same denominator, how to change them if the denominators are...
EngageNY
Grade 5 Math Module 1, Topic F, Lesson 16
See, decimal operations do come in handy! Pupils solve word problems that require adding, subtracting, multiplying, and dividing decimals. They use tape diagrams to express relationships and to identify the necessary operations to solve...
Curated OER
Subtracting Mixed Numbers
In this mixed numbers worksheet, 5th graders solve 10 mixed number subtraction problems. Helpful steps are included plus an example to guide them as they solve each problem.
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