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### We found 2,799 resources with the concept subtraction

Lesson Planet

#### Subtracting Negatives

The teacher shows four different examples of subtracting negative numbers by leaving the first value the same and then adding the opposite of the second value.

Lesson Planet

#### Tricky Word Problems - Choosing the Operation

Decipher the equations in these addition and subtraction word problems. Two examples at the top of the page guide second graders as they solve the rest of the problems. There is no space to write out the equation, but there is a place to...

Lesson Planet

#### Fractions: Subtracting Like Denominators

These presentations, designed by Monica Yuskatis, are among the best math PowerPoints you can find. Use this one to lead your pupils through the steps needed to subtract fractions with like denominators, then simplify the answers into...

Lesson Planet

#### Real-life Word Problems, Part 5

Bring these four word problems to your second grade class to reinforce addition, subtraction, and money math. The problems provide space to write out the proper equations, as well as separate areas to fill in the answers. Use these...

Lesson Planet

#### Fraction - Subtracting Unlike Denominators

These presentations by Monica Yuskaitis are particularly good. In this one, she shows viewers how to deal with subtracting fractions that have unlike denominator, no small task! This is a tricky process, and this PowerPoint takes young...

Lesson Planet

#### Addition And Subtraction of Polynomials

Though it "sounds like a really fancy word," polynomials prove to be no match for Sal's mathematical skills. After defining the term and providing a few examples, Sal works through a few equations that add or subtract polynomials,...

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#### Adding and Subtracting Fractions

With a pie graph and an infinite blackboard, this video shows how to add, subtract, and simplify fractions. Once he has established the rule, Sal throws the viewer a curve ball with a fraction subtraction problem that results in a...

Lesson Planet

#### Adding/Subtracting Negative Numbers

Guiding viewers through adding and subtracting numbers, this video includes many tips to help new learners internalize the concept of a number line. It clarifies the relationship between positive and negative numbers, including the...

Lesson Planet

#### Egyptian Counting

Ancient Egyptian's had a fantastic number system and your class gets to use it to practice basic math skills! They are presented with several examples of Egyptian numbers which they use to complete several addition and subtraction...

Lesson Planet

#### Fraction XII: Subtracting Unlike Denominators

This fractions PowerPoint defines and gives examples of multiples and least common multiple, then models how to list multiples and circle the least common multiple. Each step to use in subtracting fractions with unlike denominators is...

Lesson Planet

#### 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...

Lesson Planet

#### Subtracting Polynomials

To subtract two polynomials Sal demonstrates that you add the opposite of the second term, and then combine like terms to solve. How do you find an opposite term? Simply multiply the polynomial by -1. This video is very clearly explained...

Lesson Planet

#### 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.

Lesson Planet

#### Subtracting Mixed Numbers 2

In order to subtract mixed numbers, sometimes one may need to determine the least common multiple in order to find a common denominator. This is just what Sal does in this presentation. First, he shows how to find a common denominator...

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#### Who Wants to Win Millions-Subtracting

Have your class play a game to review subtraction principles. In this presentation, learners answer questions related to subtracting numbers up to the millions. This is a fun way to practice these skills.

Lesson Planet

#### Sailboat Subtraction

New ReviewPlay a game of subtraction tug of war with an engaging learning game that challenges scholars to answer equations as quickly as possible.

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#### Minus Mission

New ReviewA learning game tests scholars' subtraction skills. While playing, participants use a canon to subtract the slime away by choosing the correct equations that correspond with the number shown.

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#### Island Chase Subtraction

New ReviewScholars boost subtraction skills with a multiplayer learning game. Jet skis race through the water, gaining speed and distance with every correct answer a learner provides.

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#### Ducky Race

New ReviewScholars take part in a multiplayer game in which participants subtract facts to 12—the faster they solve problems, the faster they make their way around the track.

Lesson Planet

#### Skateboard Pups

New ReviewPlayers skate their way to the finish line by adding and subtracting two-step expressions as fast as possible.

Lesson Planet

#### Four Wheel Fracas

New ReviewA quick learning game challenges players to solve one-step addition and subtraction algebraic equations. Scholars play against several others, racing around the track in their four-wheeler, to see who can solve for a variable as fast...

Lesson Planet

#### The Candy Bowl Revisited

Time for more candy! Learners view a video of a candy bowl where some of the candy is removed and more placed back. Scholars come up with questions about the scenario to answer and request additional information from the teacher. At the...

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#### The Candy Bowl

Wonder how many pieces of candy a teacher can eat. Pupils watch a video of candy in a bowl as some candy is removed to be eaten and others are added. Learners devise questions about the situation along with estimated solutions. Scholars...

Lesson Planet

#### Subtracting Decimals

Take away any confusion on subtracting decimals. A short, instructional video shows mathematicians how to subtract decimals. Viewers see four examples, one where the minuend and subtrahend have the same number of decimal places, one...