Resource Room
Multisensory Teaching: Positive and Negative Integers
Working with thermometers, sixth graders compare the value of positive and negative numbers. Plenty of teacher suggestions and independent practice ideas are presented. This website links to two more parts in this first of three integer...
Curated OER
Number Bonds
Being able to recognize number bonds that make 10 is a great way to help learners add 3 digits together. First they make 10 by adding two numbers together, then they assess 3 digit addition sentences, where they make 10 first then add-on...
Curated OER
Everyday Problems
Bring math into the real world with these scenarios which have scholars adding and subtracting money and measurements. There are five word problems here. One involves three addends, another decimals, and another prompts learners to find...
Curated OER
SPIRIT 2.0 Lesosn: Adding and Subtracting Integers
Six pages prepare you to introduce your math stars to the addition and subtraction of positive and negative numbers. They drive a robot back and forth on an actual number line to represent the operations. If you don't have access to a...
Curated OER
Horizontal Mixed Addition and Subtraction Using Numbers Between 1 and 100: Part 9
In this online interactive math instructional activity, students complete several exercises by horizontally adding and subtracting numbers that range between 1 and 100. Students may access the correct answers and their score by clicking...
Curated OER
Adding and Subtraction of Integers (more than 2)
In this addition and subtraction activity, students add and subtract numbers in each problem where there are more than 2 numbers. Students complete 90 problems total.
Curated OER
Subtraction: 2 digit numbers with regrouping
In this subtraction worksheet, students subtract two digit numbers from other two digit numbers with regrouping. Students complete 30 subtraction problems.
Curated OER
Addition and Subtraction of Rational Expressions
In this rational expression worksheet, students add and subtract fractional expressions. They completely factor the numerator and denominator. Explanations and examples are provided at the beginning of the document. This two-page...
Curated OER
One More, One Less
In this addition and subtraction worksheet, students solve 6 problems in which the number one is added or subtracted from other numbers in illustrated story problems.
Curated OER
Word Addition and Subtraction
In this adding and subtracting activity, students read addition equations and write answers in manuscript and subtract one-digit numbers from two-digit numbers. Students solve 8 problems.
Curated OER
Two-Digit Addition and Subtraction No Regrouping (A)
In this addition and subtraction worksheet, students find the sums and differences by adding and subtracting two-digit numbers with no regrouping. Students solve 36 problems.
Curated OER
Two-Digit Addition and Subtraction No Regrouping (B)
In this adding and subtracting two-digit numbers worksheet, students find the sums and differences with no regrouping. Students solve 36 problems.
Curated OER
Two-Digit Addition and Subtraction (B)
In this adding and subtracting two-digit numbers worksheet, learners find the sums using mixed regrouping and no regrouping. Students solve 49 problems.
Curated OER
Arithmetic: Decimals, Fractions, and Percentages
In this decimals, fractions, and percents worksheet, students review many different concepts related to parts of a whole, such as adding and subtracting decimals, converting decimals to fractions, converting fractions to decimals,...
Curated OER
Investigation-Reasoning and Proof
The class explores even and odd numbers.They discuss the results when even numbers are added and when odd numbers are added together. Then work in pairs to find other odd and even pattern examples.
Florida Center for Instructional Technology
A Human Number Line: Teacher Notes
Twenty-one pieces of tagboard can lead your class to a greater understanding of integers when you use them to form a human number line. After creating this math tool, two strategies for adding and subtracting will have your...
Del Mar College
Exponential and Radical Rules
So many rules and so little time. Make it easy and provide all the exponent and radical rules in one place as an easy reference guide. All of the properties come with several examples to show how the rules apply to different problems.
Curated OER
Adding and Subtracting Integers
Seventh graders review the concept of integers and how to combine them. They use the number line in different situations for the visual needed to see how adding can be done. Then students practice with numerical expressions.
Curated OER
Horizontal Mixed Addition and Subtraction Using Numbers Between 1 and 100
In this addition and subtraction worksheet, students solve 12 mixed problems in which two digit numbers are added and subtracted, with and without regrouping. This is an online interactive worksheet that can be printed.
Curated OER
Adding, Subtraction, Multiplying, and Dividing Fractions and Mixed Numbers
In this fractions activity, learners first review addition, subtraction, multiplication, and division without fractions. Next, students add and subtract fractions in fifth-three problems, followed by multiplying in forty-four...
EngageNY
Understanding Subtraction of Integers and Other Rational Numbers
Subtraction is all about opposites, and the fifth activity in a series of 25 introduces the concept of subtracting integers. Pupils connect subtracting with discarding a card in the integer game. They develop the rule for subtracting...
Curated OER
Fractions Forever!
Middle schoolers identify proper, improper fractions, and mixed numbers. They reduce fractions to their lowest terms. They add and subtract fractions with different denominators, and multiply and divide fractions, as well as...
CK-12 Foundation
Expression Evaluation with Different Denominators: Adding Mixed Fractions of Water
An interactive challenges mathematicians to add mixed fractions with unlike denominators. Five questions—fill-in-the-blank and multiple-choice—build from one to the next leading the way to an open discussion about denominators and...
CK-12 Foundation
Properties of Real Number Addition: The Secret of Subtraction
Learners sometimes struggle to understand the concept of adding and subtracting integers. Help them see the why behind their answers using the interactive number line. The values change as individuals adjust the number line for each new...