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Curated OER
Addition-Decimals
For this addition worksheet, students solve twenty equations associated with addition and decimals. Students show each step of their work as they solve each equation.
Curated OER
Decimals Multiplying
In this math learning exercise, students multiply the values that are using decimals. They pay special attention to the place values for the decimals.
Khan Academy
Khan Academy: Add 2 Digit Numbers by Making Tens
Students will be challenged in their skills to add 2-digit numbers by making tens
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Subtracting Whole Numbers and Decimals
If you are looking for a website that explains and defines subtraction with decimals you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.
University of Texas
Inside Mathematics: Pocket Money [Pdf]
This task challenges a student to demonstrate fluency in adding and subtracting whole numbers.
Cool Math
Coolmath: Coolmath4kids: Adding and Subtracting Fractions With Whole and Mixed Numbers
Short tutorial explaining how to add and subtract fractions, whole numbers, and mixed numbers. Includes example problems to try.
CK-12 Foundation
Ck 12: Arithmetic: Estimation of Whole Number
[Free Registration/Login may be required to access all resource tools.] Round whole numbers in order to estimate sums and differences.
Khan Academy
Khan Academy: Dividing Whole Numbers to Get a Decimal
Divide two whole numbers to get a quotient with a decimal. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers
Use estimation to find a reasonable solution to multi-digit addition and subtraction problems. Numbers are less than or equal to 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Better Lesson
Better Lesson: Adding and Subtracting Fractions
Understanding that when the total number of parts of a whole are the same, fractions can be added.
Khan Academy
Khan Academy: Add on a Number Line
Practice adding numbers like 554 and 237 using a number line. All numbers are less than 1000.
Khan Academy
Khan Academy: Add Within 1000
Practice adding three-digit numbers. All sums are 1000 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, and ask for hints.
Khan Academy
Khan Academy: Add and Subtract Fractions: Word Problems
In this exercise, students practice adding and subtracting fractions with unlike denominators word problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Mr. Martini's Classroom
Mr. Martini's Classroom: Addition and Subtraction Comparitive Equations
Students add or subtract two whole numbers and compare the solutions using an inequality symbol. The problem on the flashcard changes color if the correct symbol is chosen.
Calculator Soup
Calculator Soup: Mixed Numbers Calculator
Do math calculations with mixed numbers (mixed fractions) performing operations on fractions, whole numbers, integers, mixed numbers, mixed fractions, and improper fractions. This calculator can add, subtract, multiply and divide mixed...
Khan Academy
Khan Academy: Subtraction Within 1000
In this exercise, students practice subtraction within 1000. Students receive immediate feedback and have the opportunity to get hints, watch video tutorials, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Khan Academy
Khan Academy: Multi Digit Subtraction
Subtract whole numbers that are less than or equal to 1,000,000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract Fractions Word Problems
Practice solving fraction addition and subtraction word problems. The fractions in these problems have unlike denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
ClassFlow
Class Flow: Adding/ Subtracting Strategies
[Free Registration/Login Required] This flipchart is geared for grade 1. Created in Activprimary, it enforces the variety of adding and subtracting strategies. use as a center or for whole group instruction.
Mr. Martini's Classroom
Mr. Martini's Classroom: Inequalities: Addition and Subtraction
Students add or subtract two numbers to solve the inequalities on these interactive flashcards. The problem changes color when the correct symbol is chosen.
AAA Math
Aaa Math: Adding Two Digit Numbers
This lesson has an explanation for adding two-digit numbers using paper and pencil. There is also a game to practice your skills. The game gives you a percent score of your correct answers, as well as running totals of your correct and...
AAA Math
Aaa Math: Consumer Math
From basics such as adding and subtracting money, converting coins, and making change to more advanced topics such as sales tax and simple interest, this interactive tutorial offers help with consumer math issues.
University of Texas
Inside Mathematics: Apple Farm Field Trip [Pdf]
This task challenges a student to use place value knowledge and understanding of operations.
CK-12 Foundation
Ck 12: Arithmetic:
[Free Registration/Login may be required to access all resource tools.] Learn how to add integers.