Curated OER
Addition and Subtraction word problems
In this addition and subtraction worksheet, students solve word problems involving one and two digit numbers. Students solve 5 problems.
Virginia Department of Education
Integers: Addition and Subtraction
Young mathematicians construct their own understanding of integers with an inquiry-based math lesson plan. Using colored chips to represent positive and negative numbers, children model a series of addition and subtraction problems as...
EngageNY
The Relationship of Addition and Subtraction
Add an outstanding resource to your repertoire. The first installment of a 36-part module looks at the relationship between addition and subtraction through an activity using tape diagrams. Pupils develop the identities w – x + x = w and...
EngageNY
Writing and Evaluating Expressions—Addition and Subtraction
Let Y represent Yes to using an excellent resource. Pupils first learn to define variables using a complete description in the 19th part in a series of 36. They write expressions involving addition and subtraction in real-world contexts...
Curated OER
Mixed Addition and Subtraction Word Problems 2, Version 4
In this finding the sum and difference word problem activity, 2nd graders add or subtract to problem solve. Students solve 5 problems.
EngageNY
Substituting to Evaluate Addition and Subtraction Expressions
Substitute this resource for what you used to use. Learners identify patterns in data tables and write addition and subtraction expressions to represent relationships. Substitution allows them to solve problems in context in the 20th...
Little 10 Robot
YodelOh™ Math Mountain
Save the yodeler from falling off the top of the mountain using basic math skills. Have endless fun while developing fluency with addition, subtraction, multiplication, and division.
Henrico County Public Schools
Models for Teaching Addition and Subtraction of Integers
Positive and negative numbers are everywhere in the world around us. Whether it's charged particles in atoms, a hot air balloon rising and falling in the sky, or a series of bills and checks being delivered in the mail, this resource...
Curated OER
Addition and Subtraction of Fractions
Students demonstrate how to solve addition and subtraction of fractions. In this fractions instructional activity, students use folded paper to shade in fractional parts and identify the sum of the parts shaded.
Collaborative Learning Project
Four in a Row Addition and Subtraction
Scroll down to find four fun addition and subtraction partner game boards, complete with endless opportunities for practice with numbers 0-38. Kids choose numbers from a number box and, depending on the game, either find the sum or the...
Curated OER
Making a Ten
An addition table supports third graders as they learn strategies to improve their math fluency. When finding sums greater than ten, learners are taught how to first make a ten and then add on the rest. A similar method is also...
Illustrative Mathematics
Pick Two
Learning to break apart numbers into smaller pairs is a critical step young mathematicians take as they develop their number sense. To practice this skill, children are provided with sets of three numbers and are asked to pick the two...
Curated OER
Addition and Subtraction Textual Problems
Learners problem solve to find answers to five addition and subtraction textual word math problems. They are encouraged to show their work in the space provided.
Houghton Mifflin Harcourt
Sushi Monster
These monsters are hungry for sushi and it's your job to feed them. Complete addition and multiplication equations to satisfy their needs while developing math fluency.
Curated OER
Addition and Subtraction Fact Family Lesson Plans
Get more bang for your buck by teaching addition and subtraction fact family lesson plans.
Curated OER
Use Addition to Check Subtractions
In this addition and subtraction worksheet, students use addition to check and work out their subtraction problems. Students solve 10 problems.
Curated OER
Three Digit Addition
In this math instructional activity, students solve three digit addition problems. Some of the addition problems require regrouping. The problems are set up to solve vertically.
Curated OER
Subtraction Worksheet
In this subtraction activity, 3rd graders solve 30 subtraction problems. The problems all involve subtracting two digit numbers from three digit numbers.
EngageNY
Addition and Subtraction Formulas 1
Show budding mathematicans how to find the sine of pi over 12. The third lesson in a series of 16 introduces the addition and subtraction formulas for trigonometric functions. Class members derive the formulas using the distance formula...
EngageNY
Addition and Subtraction Formulas 2
Knowing the addition formulas allows for the calculations of double and half formulas. The fourth installment of 16 has the class use the addition formula to develop the double angle trigonometric formulas. Using the double formula,...
CK-12 Foundation
Mental Math for Addition and Subtraction Equations: Marble Bag Collector
Don't lose your marbles as your learn about addition and subtraction equations. Pupils investigate the relationship between addition and subtraction by using an interactive. They drag different color marbles into a box and identify the...
CK-12 Foundation
Addition and Subtraction of Polynomials: Adding Polynomials
Stack the like terms to add vertically. The resource contains a visual aid to help with the addition of polynomials using the vertical method. Pupils use the aid to calculate the sum of two polynomials.
CK-12 Foundation
Addition and Subtraction of Polynomials: Sliders
Slide the coefficients to determine sums of polynomials. The interactive contains sliders to change the coefficients of an addend in a polynomial addition problem. Pupils determine the coefficients of the addend to arrive at particular...
CK-12 Foundation
Addition of Polynomials: Splitting into Tiles
Count on tiles to add polynomials. Pupils drag virtual algebra tiles onto colored mats to represent the sum of two polynomials. The learners count the number of like tiles to find the coefficient of each term. They finish by discussing...
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