CK-12 Foundation
Add and Subtract Decimals with Front-End Estimation: Wooden Beams
A six-question interactive tasks mathematicians to solve addition and subtraction problems using front-end estimation. Question types consist of multiple-choice and true or false. A set of wooden beams that can be measured using moveable...
EngageNY
Adding and Subtracting Rational Expressions
There's a fine line between a numerator and a denominator! Learners find common denominators in order to add and subtract rational expressions. Examples include addition, subtraction, and complex fractions.
Curated OER
Add and Subtract Within 20
Break down addition and subtraction into short sentences using this brief worksheet. Each question prompts scholars to make a number by doing three math operations. For the first, they make 10 by adding three, adding five, and...
Illustrative Mathematics
Comparing Freezing Points
Subtracting negative numbers can be confusing to your middle schoolers. Here, they are able to draw a number line and put their answer in sentence form to check their understanding of negative numbers.
Curated OER
Subtraction with Base 10 Models
Learning how to regroup can be a difficult concept to learn, as well as teach. This PowerPoint does an excellent job at visualizing the process with step-by-step guidelines and base ten animations. There are multiple examples for...
Curated OER
Study Buddies: Subtracting Three-Digit Numbers
In this math worksheet, young scholars will work with a coach to solve a story problem in which they must subtract three-digit numbers. Students will follow a step-by-step process and notes are provided for the coach.
Curated OER
Subtract Positive and Negative Integers
Review the concept of subtracting positive and negative integers. Learners review the rules for subtracting integers, use manipulatives to visualize the process, and complete an assessment.
Curated OER
Subtracting Fractions
In this subtracting fractions worksheet, students read about the process of subtracting fractions with like denominators, examine some sample problems, and then solve 6 problems independently.
Curated OER
Advanced Subtracting Fractions
In this subtracting fractions worksheet, students read about the process of subtracting fractions, examine some sample problems, and then solve 4 problems independently.
Curated OER
Subtracting With the Hundreds Place And Regrouping
Learners solve math problems involving subtracting with regrouping. They practice the steps for subtracting in the hundreds place with regrouping, through teacher guided practice. Independently, pupils complete story problems involving...
Curated OER
Mentally Add and Subtract 10 or 100
Get your mental mathletes in top form with this number sequence worksheet! They must add or subtract 10 from a number to complete these number lines, finding the missing three-digit numeral from a list of answers. Encourage verbal or...
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...
Houghton Mifflin Harcourt
Ten More, Ten Less
Six story problems needing answers await your class. Pictures provide some scaffolding, but consider also using unit cubes and 10-rods to compose and solve equations for each. Some of the problems require a two-step processes to solve. A...
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...
Curated OER
Voting Process
Young scholars study and participate in the voting process. In this voting process activity, students read Duck for President and vote on class snacks. Young scholars create posters for the class snacks and present them to the class....
Math Centre UK
Fractions
Reinforce fraction instruction with an informative worksheet equipped to provide independent practice, as well as guidance and modeling. Support is provided to boost proficiency in finding equivalent fractions, and adding, subtracting,...
Curated OER
Find the Difference Between Two Numbers
Perfect for younger elementary learners, this slide-show uses images of unifix cubes to show the process of subtraction. There is a complete example and five practice problems learners can complete as you progress through the resource.
Curated OER
Adding and Subtracting Fractions
In this adding and subtracting fractions worksheet, students are guided through the process of adding and subtracting fractions and finding the least common denominator for fractions with different denominators. They practice adding and...
Curated OER
Adding and Subtracting Rational Expressions
For this algebra worksheet, students add and subtract rational expressions using the LCM. They combine like denominators before they add and subtract the expressions. There are 8 questions.
Curated OER
Initial Fraction Ideas Lesson 21: Overview
Students become familiar with the process of subtracting fractions. For this subtracting fractions lesson, students complete examples and then write a story problem. Students continue to practice while sharing their problems.
Education Development Center
Adding Fractions with Unlike Denominators
If the fractions don't have a common denominator, make them have one. Learners first read and analyze a conversation of pupils trying to add 2/5 and 1/2. They compare the process of adding fractions to the process of adding quantities...
Curated OER
Problem Solving - Adding Whole Numbers
In order to practice problem-solving skills, pupils work through a series of word problems. They each determine an answer and then share their thinking process with the class. This lesson demonstrates that there may be more than one way...
Buffalo State
Adding and Subtracting Positive and Negative Integers
A well-rounded unit on positive and negative integers is a great addition to your middle school math class. Learners work through five activities, each focused on a different skill, before playing a Game of Life to practice the...
Scholastic
Study Jams! Range
Zoe just bought a bunch of CDs and wants to know the range of the prices she paid for them. Follow along and learn how to find the range of a data set by simply subtracting the largest and smallest numbers. Guided and independent...