Curated OER
Use Addition to Help You Subtract
In this early childhood addition and subtraction activity, students solve 6 math story problems that help them see the relationship between adding and subtracting.
World Wildlife Fund
Take 6
Investigate the various properties of the number six with this elementary math lesson. From simple addition, subtraction, multiplication, and division problems to the creation of hexagonal tessellations, this lesson covers all aspects of...
Curated OER
Adding and Subtracting
Pupils will add and subtract numbers less than 100 as well as understand and use the inverse relationship between addition and subtraction. They compose/decompose numbers up to 10 and understand a variety of situations in which...
Pennsylvania Department of Education
Multiplication Using Arrays
Explore the concept of multiplication by using arrays. Classmates use arrays to gain a better understanding of multiplication. They break arrays apart to model the distributive property of multiplication over addition. The relationship...
Helping with Math
Addition: Number Bonds to 20
Pupils fill in the missing addend to an addition problem that adds up to 20. This number could be a one-digit or two-digit number. They complete a total of 41 missing addend problems. Answers are available.
ISTE
Macaroni Math - Unit Overview
It's not just for lunch, mini mathematicians make use of macaroni to model addition and subtraction of numbers up to 10. They place macaroni pieces on their desk and take away to model subtraction, then write subtraction story problems....
Curated OER
Solving Inequalities By Using Addition And Subtraction
Seventh graders solve inequalities using addition and subtraction. They write number sentences based on word problems.
Curated OER
Relate Addition and Subtraction
In this early childhood addition and subtraction worksheet, students solve 6 math story problems that help them see the relationship between adding and subtracting.
Curated OER
Equal Additions
Learners explore the relationships between numbers through the use of "equal addition" and "equal subtraction." Through the use of number sense, they are able to computer addition and subtraction problems mentally. Individually,...
Curated OER
Fraction Problem Solving Process
Help your charges solve a variety of fraction and skip counting problems using a problem solving process. As a class they work through a fraction problem step-by-step, and discuss a real-life connection to the problem. Students then play...
Curated OER
Number and Number Relations: Lesson 3
Fourth graders explore the concepts of addition and subtraction. They investigate the relationship between addition and subtraction and determine the operation needed to solve a problem.
Helping with Math
Subtraction : 3-digit - 3-digit
In this subtraction worksheet, math wizards subtract three-digit numbers from different three-digit numbers. Some of the 24 problems require regrouping.
Curated OER
Addition: 2-digit + 2-digit - Regrouping
In this addition worksheet, 3rd graders focus on the addition of double digit numbers. Students solve for 30 problems using regrouping where necessary.
Curated OER
Subtraction: Two Digit by Two Digit - No Regrouping
In this subtraction worksheet, 2nd graders find the differences in 30 two digit by two digit problems in which they do not have to regroup.
Curated OER
Addition: 3-Digit Sums (Carrying Tens)
For this addition practice worksheet, students improve their math skills as they solve 30 problems that require them to add 2-digit numbers to 2-digit numbers
Curated OER
Subtraction: Decimals
In this decimal subtraction worksheet, students solve 15 problems that require them to subtract decimal numbers with 1-5 digits.
Curated OER
Addition - Decimals
In this decimal addition worksheet, students solve 15 problems that require them to add decimal numbers with 1-5 digits.
Curated OER
Do it With Dominoes
Students explore modes for addition. In this K-2 mathematics instructional activity, students investigate the four models of addition (counting, sets, number line, and balanced equations) using dominoes. Students examine the...
Curated OER
Finding Addition Patterns
Learners practice finding the sums of two-one digit numbers. In this addition lesson plan, students also record facts onto an addition chart.
Curated OER
Math, Fractions, and Music
Young scholars discover the relationship between musical rhythms and fractions. They add musical notes together to produce fractions and create addition and subtraction problems with musical notes. Students complete worksheets and create...
Curated OER
Fact Families
Students explore the relationship between addition and subtraction as they independently complete problems with fact families. Students complete fact family problems by completing a fact triangle. Additionally, students orally state a...
Curated OER
Subtraction: Two Digit By One Digit With Regrouping
In this subtraction worksheet, 3rd graders find the differences to 30 problems in which they subtract a one digit number from a two digit number. They regroup as needed.
Curated OER
Subtraction: One Digit from Two Digits With No Regrouping
In this subtraction worksheet, 3rd graders find the differences to 30 problems in which they subtract a one digit number from a two digit number. They regroup as needed.
Curated OER
Fact Families - Part 2
Complete these fact families; mathematicians use addition number sentences to write three more equations, all of which are members of the same fact family. There is an example here to guide them, and they solve for nine more number...