Quia
Quia: Hangman Rounding
Don't get "hung up" when you play this old game with a new twist. Simply, round each numbers to the nearest thousand then, find the sum or difference. Knowledge of place value units, where to put the comma, and good computation skills...
Khan Academy
Khan Academy: Add Within 1000
Practice adding three-digit numbers. All sums are 1000 or less.
Khan Academy
Khan Academy: Add Using Groups of 10 and 100
Practice making groups of 10 and 100 while adding 3-digit numbers.
ClassFlow
Class Flow: Who Am I Thinking Of? Add Sub
[Free Registration/Login Required] This flipchart is an addition and subtraction game that the whole class can play. It is similar to the "Who has? I have?" game. The game is set up so that the students or the teacher can create problems...
Other
Eduteka: Aritmetica Cuatro
In this activity two students play a game where player tries to connect four pieces in a row before the opponent. Players respond to problems involving addition, subtraction, multiplication and division of whole numbers. Level of...
AAA Math
Aaa Math: Adding With a Calculator
Use this online calculator game to practice using a calculator. The game keeps track of your correct and incorrect answers. It also shows you a percent score of your correct answers as you play.
University of Cambridge
University of Cambridge: Nrich: Magic Squares 3x3
Use your problem solving skills to make these magic squares work correctly. The solutions are at this one page website.
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...
ICT Games
Ict Games: 100 Hunt: +10
You will need to add 10 to the target number given. Find the sum and click on it in the hundreds chart. See if you can keep your time score as low as possible.
Can Teach
Can Teach: Math Centers
This page offers a variety of math center ideas for general math and geometry. Instructions on setting up the center are not provided for most ideas, however, those lacking instructions are pretty self-evident.
University of Texas
Inside Mathematics: Apple Farm Field Trip [Pdf]
This task challenges a student to use place value knowledge and understanding of operations.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Power of Ten
This website from The Math Page explains and defines basic arithmetic terms and place value concepts. There is even a practice section at the very end of the lesson.
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.
Saddleback College
Algebra2go: Subtraction Using an Abacus Problem Sets
This resource has three problem sets to practice subtraction using Abacus worksheet. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have answered all of the questions,...
E-learning for Kids
E Learning for Kids: Math: Traditional African Village: Number Facts & Hundredths
Asha's village is having a marble competition. Help her find out who is the winner.
Ministerio de Educación (Spain)
Ministerio De Educacion: Conecto Con Las Mates
These are five interactive units for Elementary math. Each unit is structured in four parts: explanation, activities, dictionary and assessment.
Other
Welcome to mr.r's World of Math!!!
At this site, math word problems are presented in an exciting and creative format. Students attempt to find solutions to hilarious situations using their mathematical skills. To do this they must solve various math problems in a certain...
University of Cambridge
University of Cambridge: Nrich: Napier's Bones
Use this one page website to learn how to multiply and divide a "new" way. This method was invented over 400 years ago by John Napier. A detailed explanation is only a click away.
Application Magazine
Aplicaciones: Calculo Interactivo
Here you will find many different set of exercises about simple operations, combined operations and word problems. Test your knowledge and get your final score.