Interactive
CK-12 Foundation

Properties of Real Number Addition: The Secret of Subtraction

For Students 6th - 8th Standards
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...
Lesson Plan
Virginia Department of Education

Properties of Real Numbers

For Teachers 7th - 8th Standards
Students use paper cups and colored chips to observe properties of operations with real numbers. As a class, students brainstorm and use manipulatives to demonstrate associative, commutative, distributive identity and inverse properties....
Worksheet
DK Publishing

Money Word Problems #3

For Students 2nd - 3rd Standards
Money is an excellent way to help young mathematicians practice adding and subtracting numbers with decimals. They solve 15 word problems representing a variety of scenarios for calculating money. For some, scholars determine which bills...
Lesson Plan
Curated OER

Learn to Earn When you Tend to Spend

For Teachers 2nd - 3rd
Analyzing and understanding word problems is extremely important. Pupils learn that in money problems, earn usually means you add and spend usually means you subtract. They will solve a series of money-related word problems, label coins,...
Organizer
Curated OER

Fractions: Add and Subtract

For Students 4th - 5th
For this fractions worksheet, students count the spare change they have at home and complete a chart, filling in coin values, number they have and total value for each. Students then represent the make a pie chart to represent fractions...
Lesson Plan
Curated OER

Islamic Inheritance Mathematics

For Teachers 9th - Higher Ed
Students determine how a woman's estate is divided among her beneficiaries according to Islamic inheritance law. They add and subtract fractions.
Interactive
Scholastic

Study Jams! Addition & Subtraction of Decimals

For Students 4th - 6th Standards
So current with preteens is the topic of downloading tunes into their computers! In a relatable lesson, viewers are taught to figure out if Zoe can afford to purchase two songs if she has $3.00 left to her credit. Mia talks them through...
Lesson Plan
Pennsylvania Department of Education

Adding and Subtracting Rational Numbers to Solve Problems

For Teachers 9th - 12th
Young scholars explore the concept of probability.  In this probability lesson, students use area to determine probability.  Young scholars use charts and spinners to help determine the probability of events such as flipping a...
Worksheet
Curated OER

Three-Digit Addition and Subtractions [M]

For Students 3rd - 4th
For this addition and subtraction worksheet, students complete a total of 49 problems, adding or subtracting 3 digit numbers. Answers included on page 2.
Worksheet
Curated OER

Adding and Subtraction Fractions Quiz

For Students 5th - 6th
in this fractions quiz learning exercise, students add or subtract, solving for n in a set of equations. Answers are included on page 2. A reference web site is given for additional activities.
Lesson Plan
Pennsylvania Department of Education

Adding and Subtracting Three-Digit Numbers by Jumping

For Teachers 2nd
Second graders use data to graph information and draw conclusions. In this lesson on data analysis, 2nd graders practice gathering, sorting, comparing, and graphing data. Students differentiate data that can and cannot change over time.
Lesson Plan
Curated OER

Pet overpopulation-Dogs and Cats Can't Add or Subtract, But They Sure Can Multiply

For Teachers 5th - 8th
Learners explore pet overpopulation.  In this character development lesson, students solve math story problems to determine how many kittens can be produced by one unspayed cat. Learners discuss the consequences of pet...
Lesson Plan
Curated OER

Number: Negative Numbers

For Teachers 5th - 6th
Pupils solve numerical equations with negative numbers. They use the number line to compare the relationship of numbers greater than zero to those less than zero. They practice starting at various points on the number line and then...
Lesson Plan
Curated OER

Fractions And Integers Review

For Teachers 6th - 8th
Investigate the concepts of fractions and integers in order to review for a future assessment. The teacher reviews the major concepts with the class and provides help throughout the instructional activity as needed. Math students work...
Lesson Plan
Curated OER

Discovering Math: Computation

For Teachers 5th - 7th Standards
Middle schoolers add, subtract, multiply, and divide rational numbers. They find the square and the cube of numbers. They create a game incorporating computation on rational numbers. Everyone works together to write and evaluate...
Worksheet
Curated OER

Using 10 to Subtract

For Students 1st - 2nd
Pictures of 10-frames help young mathematicians complete 4 subtraction equations with numbers up to 20. This is a resource that just might help subtraction across 10 "click" for your visual learners. They cross out objects from the...
Lesson Plan
Curated OER

Signed Numbers and Order of Operations I

For Teachers 8th - 9th
In this signed numbers worksheet, students simplify equations by using the indicated operation. They add, subtract, multiply, and divide equations containing two to four positive and negative integers. Three of the 25 equations contain...
Lesson Plan
Curated OER

Investigation-Reasoning and Proof

For Teachers 2nd - 3rd
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.
Lesson Plan
Curated OER

Simplifying Expressions (Addition and Subtraction)

For Teachers 7th
Seventh graders simplify algebraic expressions using addition and subtraction to combine like items and solve for the variable. They work with inverse operations to solve equations with guided practice. Everyone completes various...
Lesson Plan
Curated OER

Addition, Subtraction, Multiplication and Division of Signed Numbers 2

For Teachers 6th - 8th
In this operation worksheet, students solve integer equations using one operation. The equations require students to add, subtract, multiply or divide positive and negative numbers. Most equations contain only two integers, but a few...
Worksheet
Curated OER

Morning Math

For Students 4th - 7th
Rise and shine, mathematicians! These warm-ups will get your class putting on their thinking caps first thing as they recall past concepts and continue practicing newer ones. The problems are segmented and include concepts such as number...
Lesson Plan
Curated OER

Positive and Negative Numbers

For Teachers 6th - 9th
Pupils use blocks and markers to illustrate the processes of adding, subtracting, multiplying and dividing integers. In this mathematics lesson, learners use Algebra blocks to demonstrate multiplying polynomials.
Lesson Plan
Curated OER

What's That Number? 1-Digit Addition and Subtraction

For Teachers 1st - 2nd
In this subtraction and addition worksheet, students fill in missing numbers in problems necessary to arrive at given answers. All problems use 1-digit numbers only.
Lesson Plan
Curated OER

Mayan Math

For Teachers 5th
Fifth graders investigate the Maya's as mathematicians. In this Mayan math lessons, 5th graders work with the ancient Mayan numbering system by comparing it to the American Number System. They tell the differences and similarities...