Curated OER
Three Digit Addition and Subtraction (E)
In this three digit addition and subtraction worksheet, students add and subtract three digit numbers. Students complete 49 problems where they add and subtract three digit numbers.
Curated OER
Three Digit Addition
In this math 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 worksheet, 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...
CK-12 Foundation
Vector Subtraction
Move vectors to determine their difference. Pupils use an interactive to visualize the opposite of a vector. They use the concept of adding vectors to subtract vectors by adding the opposite and, finally, view the differences of the...
CK-12 Foundation
Vector Sum and Difference: The Country of Dreams
Find your way around using vectors. Scholars use an interactive to learn about vector addition. They answer a set of questions about modeling a route on a map using vectors.
Scholastic
Math Word Problems
After reading The Mitten by Jan Brett, youngsters willuse the characters in the story to write word problems for addition and subtraction. For example, they may state that a rabbit had 7 carrots and then lost 2, how many were left? There...
DK Publishing
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...
Free Homeschool Resources
Addition/Subtraction Worksheet Collection
This resource links you to Free Homeschool Resources' comprehensive directory of worksheets that provide practice in all basic math fact skills. Need to practice addition or subtraction? Loads of worksheets to help all come with answer...
Curated OER
Times Tables - Multiplication
Introduce students to multiplication through this fantastic math worksheet. Provides beginners with an explanation of multiplication as repeated addition using pictures to help students visualize the meaning and process of multiplying....
Curated OER
Understand Subtraction and Its Relationship to Addition
Understanding the relationship between addition and subtraction is the focus of this math worksheet. Students answer "true" or "false" to 14 statements regarding addition and subtraction. Answers appear at the end.
Curated OER
Using Addition and Subtraction to Solve Problems II
In this addition and subtraction problem solving worksheet, 3rd graders use addition and subtraction skills to answer ten multiple choice word problems.
Curated OER
20 Questions: Math Questions
Here are 20 questions just waiting for a class to complete them. Each of the problems is either subtraction or addition, under or up to 20. Learners complete each question, then exchange papers for a peer to grade. Answers are included.
Curated OER
What's That Number? 1-Digit Addition and Subtraction
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.
Curated OER
Subtraction of Integers Worksheet
For this math worksheet, pupils solve the problems that involve the operation of subtraction with integers. They change the subtraction to addition of the opposite.
Curated OER
Subtracting Three Numbers
Second and third graders practice subtracting problems with one digit, two digit, and three digit numbers. They complete 80 subtraction problems.
Curated OER
Addition and Subtraction Worksheet 3
In this math activity, students solve thirty addition and subtraction problems. The problems contain one-digit and two-digit numbers.
Curated OER
Addition and Subtraction Snack Search
In this addition and subtraction worksheet, students solve 33 addition and subtraction problems where they circle the problems that are correct in order to draw paths for an elephant, a horse, and a polar bear to reach their snack.
Curated OER
Money Subtraction (J)
In this money subtraction worksheet, students subtract three digit numbers that represent dollars and cents. Students complete 20 problems where they have to subtract three digit numbers representing money. All of the money amounts are...
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