Curated OER
Math Cross--Puzzle #13
In this mathematical calculation learning exercise, students fill in a crossword puzzle as they solve twenty-eight addition, subtraction and multiplication problems going across and down.
Curated OER
Math Cross--Puzzle #18
For this money worksheet, students fill in a crossword puzzle as they solve twenty-eight addition, subtraction and multiplication math problems involving different types of coins and money.
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...
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....
Curriculum Corner
Order of Operations Task Cards (2)
Young mathematicians use their PEMDAS knowledge to solve 20 different task cards. They evaluate expressions to find the answer of multiplication, division, addition, subtraction, and exponential problems. Then, they record their answers...
Curated OER
Relating Addition and Subtraction
In this number sentence activity, 3rd graders write a related addition or subtraction sentence for 13 math problems. Students answer 2 word problems and 2 multiple choice answer math problems relating to number sentences.
Curated OER
Independent Practice 1: Missing Addition or Subtraction Sign
In this addition and subtraction instructional activity, learners supply a plus (+) or a minus (-) sign in the square to make the number sentence true for twenty problems.
Curated OER
Math Symbols
Some times simple is as good as gold. Early learners are introduced to the basic mathmatical symbols used to represent addition, subtraction, multiplication, division, and equals; each slide contains one large image of each symbol.
Curated OER
Worksheet #2: Algebraic Expressions
For this algebraic expression worksheet, learners evaluate algebraic expressions involving the addition, subtraction, division, and multiplication of negative and positive integers. Students identify mathematical properties and find the...
EngageNY
Adding and Subtracting Rational Expressions
There's a fine line between a numerator and a denominator! Learners find common denominators in order to add and subtract rational expressions. Examples include addition, subtraction, and complex fractions.
Curated OER
Math Mammoth End of Year Test - Grade 2
Assess your second graders with this end of the year test. Originally meant for home school, this assessment could also be used in a larger setting. Learners complete 35 problems based on their knowledge of the second grade math...
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
Fact Families PowerPoint
Using an attractive and easy to follow format, this presentation offers an overview of the concept of a fact family. The areas covered include addition, subtraction, multiplication and division. In addition, the slides show definitions...
Curated OER
Addition and Subtraction Problems: numbers to 20
You'll never be out of subtraction worksheets again. Here are 11 different sheets that require learners to add or subtract to find sums or differences up to or less than 20. Perhaps these can be used at home, at a work station, or to...
Curated OER
Addition and Subtraction Snack Search
In this addition and subtraction instructional activity, learners 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...
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