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Curated OER
Adding and Subtracting Integers
For this online interactive integers worksheet, 4th graders solve 8 addition and subtraction integer math problems and problem solve 6 integers problems involving numbers from -20 to 20. Students check their answers online when done with...
Curated OER
Math History Can Help Students Overcome Learning Difficulties
Negative numbers and mathematical notation are better understood by examining how they have been handled throughout history.
Raytheon
Strategies for Solving Math Word Problems
In this strategies for solving math word problems activity, learners read two pages of examples and explanations, then solve 42 addition, subtraction, multiplication and division problems, answer sheet included.
Curated OER
Sieve of Eratosthenes
Students discover the Sieve of Erathosthenes. They explore a method to find all the prime numbers in a group of numbers. Using models, students practice divisibility rules while examining the difference between prime and composite numbers.
Curated OER
Mathville 1
For this addition and subtraction worksheet, 1st graders add fifteen pairs of numbers between one and ten. They subtract on five problems. Three subtraction problems require regrouping.
Curated OER
More Subtraction Review
In this subtraction worksheet, students practice their subtraction skills by completing four different subtraction sets of problems.
Curated OER
Melt in Your Mouth Subtraction
Students engage in a lesson which involves role-play and the use of manipulatives to solve subtraction problems. After a lecture/demo, students utilize a worksheet imbedded in this plan to gain subtraction practice. They get to eat the...
Curated OER
Fact Family Frenzy
Second graders explore fact families and inverse relationships between addition and subtraction. They use flashcards to model the inverse relationships. Students complete the equations for each fact family.
Fuel the Brain
Subtraction and Comparison
Have your class compare amounts by using basic subtraction to solve these story problems.
Curated OER
Subtraction is Fun!
In this subtraction worksheet, 1st graders enhance their subtraction skills by solving the single digit subtraction equations. Students solve 12 problems.
Curated OER
Math Worksheet 1: Subtraction
In this subtraction practice worksheet, students sharpen their math skills as they solve 15 problems that require them to subtract 1 or 2-digit numbers from 2-digit numbers.
Curated OER
Subtract with Regrouping
In this subtraction practice worksheet, students sharpen their problem solving skills as they solve 6 story problems that require them to regroup.
Curated OER
Subtract Across Zeros
In this subtraction practice activity, students sharpen their problem solving skills as they solve 6 story problems that require them to subtract across zeros.
Curated OER
Inverse Relationships (3)
In this missing numbers worksheet, students analyze 30 pairs of equations with missing numbers. Students fill in the missing numbers in the addition or subtraction fact. No number on the page is greater than 3.
Curated OER
Cold Hard Facts...What Inquiring Minds Will Know
Students work with "ice" in order to gain a practical application of math concepts that evolve into an inquiry-based study. They determine if the dimensions of the ice make a difference in the way the ice floats in the water.
Curated OER
Name For Numbers
In this same number facts worksheet, 2nd graders use either addition or subtraction to solve 8 math problems and then place the two math problems that match the numbers at the bottom of 4 trees on the lines provided.
Curated OER
Leaves for Our Tree
Young mathematicians review fact families and create a Math Fact Family Tree. This clever lesson plan includes some excellent printouts that support the instructional activity.
Alabama Learning Exchange
Mix it Up! Exploring the Commutative and Associative Properties of Addition
Examine commutative and associative properties with your class. They'll explore the relationships between addition and subtraction and investigate patterns as they solve addition problems. Links to an assessment and a table game are...
Curated OER
How to Subtract to 10
Students subtract to 10 through the use of manipulatives. They will use craft sicks and the fact family on their practice pages. They examine how subtracting one always uses the larger number first.
Curated OER
On the Trail of the Blue Crab
Third graders read the article "Blue Claw," discuss crab migration, and look at a map of the Hudson River. They complete a worksheet where they must use subtraction to determine the distance migrating crabs travel.Web links, article, and...
Curated OER
Fact Families to 18
In this fact families to eighteen worksheet, students problem solve six word problems associated with fact families to eighteen.
Curated OER
The Math Lesson 23
In this math practice worksheet, 1st graders enhance their addition and subtraction skills by completing the 20 pages of addition and subtraction equations.
Curated OER
The Math Lesson 24
For this math skills worksheet, 1st graders enhance their addition and subtraction skills by solving the 20 pages of double digit equations.
T. Smith Publishing
Halloween Add or Subtract Worksheet 1
Twenty-eight subtraction problems are presented using single- or double-digits. Because of a fuzzy bat at the top of the page, this is a Halloween-themed worksheet. Use it as a homework assignment or assessment of subtraction skills.