Curated OER
Mental Subtraction Methods
In this math worksheet, students learn a strategy to mentally subtract a single digit number from a two digit number such as 53-8. Students follow the detailed instructions to subtract in 18 problems.
Curated OER
Factoring: A General Strategy
For this algebra worksheet, students factor 10 polynomial expressions. Problems involve several approaches to factoring, including factoring out common elements by grouping, factoring the difference of two squares, and factoring the sum...
Curated OER
Subtraction Worksheet: Numbers to 19
In this subtraction worksheet, students solve 36 problems in which numbers below 20 are subtracted. The minuend has two digits and the subtrahend has only one.
Curated OER
Developing Strategies for Addition and Subtraction
Primary graders develop strategies to assist them with addition and subtraction. They discover number combinations and numerical facts which enable them to add and subtract more effectively. Students use these techniques to complete...
BBC
Simple Addition and Subtraction
Here is a wonderful lesson plan designed for young mathematicians. In it, they employ simple addition and subtraction strategies in order to solve word problems. There are some excellent activity sheets embedded in the plan to make the...
Common Core, Inc.
Multi-Digit Whole Number Subtraction
A thorough exploration into subtracting multi-digit numbers, this series of lessons is an excellent way to guide learners of any skill level. With a step-by-step lesson plan and straightforward assessment tools, kids are sure to...
Curated OER
My Math Curse!
Math novices examine how math can help them in real-world situations. They listen to the book The Math Curse by Jon Scieszka, solve various word problems from the book, explore various math websites, write original math word problems,...
Curated OER
Subtraction Maze
In this math puzzle activity, students use their subtraction skills to solve a math puzzle and write an explanation of their problem solving strategy.
Curated OER
Jump Rope Math
Students practice grade level math skills. In this math instructional activity, students solve math facts on index cards and collaboratively arrange them in numerical order on a jump rope. Correct order earns the team a chance to...
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, young scholars are taught how to first make a ten and then add on the rest. A similar method is also...
Illustrative Mathematics
Many Ways to Do Addition
A great aspect of teaching math is that children have the freedom to solve problems using a variety of different strategies. The focus of this lesson is for young mathematicians to become aware of many ways of answering addition...
EduGAINs
Making Savvy Consumer Choices
It's never too early to learn about grocery budgeting. Middle schoolers delve into the world of consumer math with a activity that focuses on both healthy choices and real-world math applications. Groups work together to form a grocery...
5280 Math
Integer Interpreter
Can you add variables if you don't know their value? Using an empty number line, scholars first locate the position of the difference, sum, product, and quotient of two unknown integers. Later problems mix operations as well as add...
Curated OER
All About Money
Few topics engage young mathematicians as much as learning about money. Through a series of shared readings and hands-on activities, children explore the US currency system, learning how to count money and calculate change as they create...
Curated OER
Addition and Subtraction Facts to 20 - Manipulative
Here is a good lesson that will allow your student to practice their addition and subtraction facts to 20. They practice facts using fact cards and practice strategies such as doubles strategies, and count to 10 strategies.
Curated OER
Two-Digit Subtraction With and Without Regrouping
Second graders subtract two-digit numbers. In this mathematics instructional activity, 2nd graders subtract both with and without regrouping. Students use manipulatives and place value mats to assist in problem solving.
K-5 Math Teaching Resources
Subtracting Mixed Numbers (Unlike Denominators)
Young mathematicians demonstrate their ability to subtract mixed numbers by completing this collection of fraction word problems. From figuring out the weight of objects in a package, to finding the difference in height between two...
Illustrative Mathematics
Boys and Girls, Variation 1
Given a certain amount of boys and certain amount of girls, how many children are there total in the class? Assess learners' ability to use addition and subtraction strategies when solving word problems.
Illustrative Mathematics
What’s Missing?
Now you see them, now you don't! This fun peek-a-boo activity engages young mathematicians in developing their ability to compose and decompose numbers. After being presented with a series of counters, children close their eyes while the...
Illustrative Mathematics
Field Day Scarcity
Introduce young mathematicians to concepts of financial literacy with this open-ended word problem. With seven dollars to spend during field day and given a list of available items and their prices, children must determine how they want...
Curriculum Corner
7th Grade Math "I Can" Statement Posters
Translate the Common Core math standards into a series of achievable "I can" statements with this collection of classroom displays. Offering posters for each standard, this resource is a great way to support your seventh graders as they...
Curated OER
Multiplication and Division within 100
Nothing out of the ordinary here; young mathematicians complete two multiplication and two division problems with whole-number products and quotients. Because the answer is described below, this would work best as an all-class warm up,...
Curated OER
Teddy Bear Subtraction
Do this exercise to prime early learners for a day of subtraction. They discuss problem-solving strategies, listen to a story problem involving teddy bears, then go to their assigned math station. This is a great way to prime the day.
Curated OER
Problem Solving Decision: Multistep Problems
Capture your learners' attention by asking them to find the difference in size between the 12-inch silky anteater and the 6-foot giant anteater! This order of operations worksheet has students first identify the meaning of finding the...