NumberNut
Number Nut: Addition: 1 to 10
Explains the concept of addition, and the vocabulary and symbols that are used, with reference to the addition of single-digit numbers.
NumberNut
Number Nut: Subtraction: Subtracting More Than Two Values
Explains how to subtract when there is more than one value being subtracted.
Mr. Martini's Classroom
Mr. Martini's Classroom: Addition and Subtraction Quiz
Students can test their knowledge of addition and subtraction facts. They can choose to have their quiz graded or select new problems.
AAA Math
Aaa Math: Adding Three Digit Numbers
Read through this explanation of how to add three digit numbers. Use the online game to practice this skill. The game will keep running totals of your correct and incorrect answers. It will also show you a percent score of the correct...
Lizard Point Quizzes
Lizard Point: Subtraction Practice
At this site from Lizard Point Consulting, you can practice several different levels of difficulty of subtraction problems that use 1-digit numbers all the way up to 3-digit number subtraction problems that require regrouping. You can...
Soft Schools
Soft Schools: Addition and Subtraction Game
Students enter the answer to mixed addition and subtraction problems. Score is kept.
Math Is Fun
Math Is Fun: Place Value
Find out what the "tens" and "hundreds" columns are and how they can help you understand a numbers place value. Learn what each digit of a number stands for with the help of charts used at this MathsIsFun resource.
ClassFlow
Class Flow: Two Digit Addition With Regrouping
[Free Registration/Login Required] This flipchart will help the second grade student review three digit place value and comparing numbers. It has a helpful work mat for teaching two digit addition with regrouping. Students will learn how...
ClassFlow
Class Flow: Estimating Sums and Differences
[Free Registration/Login Required] This flipchart is designed to teach third grade students the steps in estimating sums and differences. It also reviews rounding numbers to the nearest ten and hundred.
ClassFlow
Class Flow: Expanded Notation
[Free Registration/Login Required] This is a 1 day mini-lesson on expanding 3 digit numbers. Students will practice building 3 digit numbers and writing out the value using expanded notation. Students will have instant feedback on...
ClassFlow
Class Flow: Making a Ten Adding Two Digit Numbers
[Free Registration/Login Required] This flipchart introduces the concept of addition of sums of 10 or more than 10. The flipchart has examples with visuals to help students understand tens and ones. It would be useful when beginning a...
University of Cambridge
University of Cambridge: Nrich: Ladybugs in the Garden
On this one page website sharpen your logic and addition facts skills while working on this challenge. The solution is available to double check your solution.
Topmarks Online
Topmarks: Place Value Charts
Great resource for learning or teaching place value with different levels of difficulty which include decimals. The practice mode helps students understand how numbers are made up. Immediate feedback is given.
SMART Technologies
Smart: Regrouping in Addition and Subtraction
An interactive lesson to help 2nd graders understand fair exchanges and how they apply to regrouping in addition and subtraction.
Math Aids
Math Aids: Math Flash Cards
Great resource to practice and strengthen math skills pertaining to a variety of operations. Math worksheets are printable, may be customized, and include answer keys.
Beacon Learning Center
Beacon Learning Center: Trading Game
Learners explore regrouping using place value blocks. Topics include regrouping ones, tens, and hundreds.