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2,799 resources with the concept subtraction

1:47
Lesson Planet

Subtracting Negatives

For Teachers 5th - 8th
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

For Students 2nd - 3rd Standards
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

For Teachers 3rd - 5th Standards
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

For Students 2nd - 4th Standards
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...
1 In 1 Collection
Lesson Planet

Fraction - Subtracting Unlike Denominators

For Teachers 4th - 6th
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...
16:00
Lesson Planet

Addition And Subtraction of Polynomials

For Students 7th - 11th
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,...
9:50
Lesson Planet

Adding and Subtracting Fractions

For Students 7th - 9th
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...
9:16
Lesson Planet

Adding/Subtracting Negative Numbers

For Students 7th - 9th
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

For Teachers 5th - 8th
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...
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Fraction XII: Subtracting Unlike Denominators

For Teachers 4th - 5th
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

For Teachers 1st - 3rd
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...
2:07
Lesson Planet

Subtracting Polynomials

For Students 8th - 9th
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

For Teachers 3rd - 5th
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.
4:54
Lesson Planet

Subtracting Mixed Numbers 2

For Students 5th - 7th
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...
Lesson Planet

Who Wants to Win Millions-Subtracting

For Teachers 5th - 6th
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.
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Sailboat Subtraction

For Students 1st - 3rd Standards
New ReviewPlay a game of subtraction tug of war with an engaging learning game that challenges scholars to answer equations as quickly as possible.
Lesson Planet

Minus Mission

For Students 1st - 3rd Standards
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

For Students 1st - 3rd Standards
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

For Students 1st - 3rd Standards
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.
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Skateboard Pups

For Students 2nd - 5th Standards
New ReviewPlayers skate their way to the finish line by adding and subtracting two-step expressions as fast as possible.
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Four Wheel Fracas

For Students 3rd - 6th Standards
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

For Students 2nd Standards
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...
Lesson Planet

The Candy Bowl

For Students 2nd Standards
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...
3:03
Lesson Planet

Subtracting Decimals

For Students 6th - 12th Standards
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...