CK-12 Foundation
Ck 12: Arithmetic: Whole Number Addition
[Free Registration/Login may be required to access all resource tools.] Write and solve vertical addition problems with whole numbers.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Add Whole Numbers, Add Decimals
This website explains and defines adding whole numbers and decimals. Content explores addition with regrouping and how to align numbers in a written calculation. There are even practice problems at the end of the lesson.
Khan Academy
Khan Academy: Round Whole Numbers
Practice rounding whole numbers to the nearest hundred or thousand. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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.
Texas Instruments
Texas Instruments: Addition of Whole Numbers
This StudyCards stack enables students to review basic addition of positive and negative integer numbers. They are tested on their ability to add positive numbers, negative numbers and numbers in parenthesis.
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.
Elias Saab
Math Drills: Whole Number Operations Quiz
An interactive quiz which provides students with two whole numbers and a randomly selected operation sign between them. Students input their solution and have the program evaluate it. Hints are available if the student needs them, and...
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Multi Digit Whole Number and Decimal Fraction Operations
A guide to support parents as they work with their students with multi-digit whole number and decimal fraction operations.
University of Texas
Inside Mathematics: Pocket Money [Pdf]
This task challenges a student to demonstrate fluency in adding and subtracting whole numbers.
Better Lesson
Better Lesson: Domino Addition: Understanding the Part/part/whole Relationship
The big idea of this lesson is the understanding that addition can be represented as parts of a whole and that we can use addition sentences to represent those parts.
ReadWriteThink
Read Write Think: Whole to Parts Phonics Instruction: Letter Sound Correspondences
Contains plans for two lessons that use the whole-to-parts phonics approach to beginning reading. It uses onset and rime to group word families and spelling patterns to show sounds in context. In addition to objectives and standards,...
CK-12 Foundation
Ck 12: Elem Math: Sums of Whole Numbers to 1000 (Grade 4)
[Free Registration/Login may be required to access all resource tools.] Use addition to find the sum or summand of numbers up to 1000. It includes how to videos with an overview, selecting the correct and incorrect sentence, and adding...
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...
CK-12 Foundation
Ck 12: Elem Math: Sums of Whole Numbers to 1000 (Grade 3)
[Free Registration/Login may be required to access all resource tools.] This site offers the video "Addition: 3 Digits." and a practice quiz in which students solve problems using addition to find the sum or summand of numbers up to 1000.
AAA Math
Aaa Math: Addition Using Estimation
This site explains how to estimate sums by rounding whole numbers. Games and exercises are provided to practice the skill.
The Math League
The Math League: Decimals, Whole Numbers and Exponents
This tutorial has definitions and examples of decimals, whole numbers, and exponents. In addition, a variety of topics are covered, such as comparing, multiplying and subtracting.
The Math League
The Math League: Whole Numbers & Basic Properties
Here is a nice resource for students and teachers about whole numbers and their basic properties. It provides links to information on place value, expanded form, and rounding numbers are just a few of the topics on this page.
Calculator Soup
Calculator Soup: Adding and Subtracting Integers (Whole Numbers) Calculator
Use this calculator for adding and subtracting integers. Positive and negative whole numbers are integers. The calculator shows the work for the math and shows you when to change the sign for subtracting negative numbers.
Fun Brain
Fun Brain: Soccer Shootout (Fractions and Whole Numbers)
Using fractions and whole numbers, score goals and block your opponent's goals by correctly answering addition, subtraction, multiplication, and division problems. Four levels of play--easy, medium, hard, and super brain--to test your...
Better Lesson
Better Lesson: Addition in the Real World
Think of addition in the real world as the joining of two parts to make a whole. The use of addition number sentences can show how we join the parts to make the whole.
CK-12 Foundation
Ck 12: Arithmetic: Whole Number Exponents Grade 6
[Free Registration/Login may be required to access all resource tools.] Understand and solve problems with exponents. In addition, links above this content lead to extended explanations, videos, and practice using exponents.
Khan Academy
Khan Academy: Compare 3 Digit Numbers
Practice more challenging problems comparing numbers within 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Other
Kinder Magic: Addition of Whole Numbers
This interactive site contains problems on which you can test yourself and imrpove your skills regarding the addition of whole numbers. Requires Java Plug-in.
Discovery Education
Discovery Education: Web Math: See How Two Numbers Add Together
WebMath offers a good addition practice site. Students can use this site to check their homework assignment. An explanation is given regarding how each answer was arrived at.