Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Elementary Addition
This resource offers six brief arithmetic lessons: sums less than ten, sums of ten, and sums between ten and twenty, doubling, zero, and a set of general practice problems.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Multiplication Table
This multiplication table has multiplication facts through 9 X 9 and also lets students practice them.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Multiplying and Dividing by Powers of 10: The Meaning of Percent
This excellent math resource explains and defines the meaning of percent. Multiplying and dividing by a power of 10 is incorporated as a preview to understanding scientific notation.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Decimals
This website from The Math Page explains and defines decimals.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Percent With a Calculator
This tutorial explains how to use a calculator to find a percent. There is also a practice section at the end of the lesson.
Quia
Quia: Adding to 10
This website for young children gives them practice adding sums to 10. Problems are presented as teddy bears to add up with the corresponding digits that represent the problem symbolically.
Quia
Quia: Multiplication Madness
In this interactive website put twenty multiplication problems in order according to the increasing value of their products.
Quia
Quia: Brain Buster Multiplication
Go from rags to riches as you advance through the levels in this "Who Wants to Be a Millionaire?," type multiplication game.
Quia
Quia: Multiplication Tables 1 12
Practice multiplication facts by playing Concentration-like game.
Quia
Quia: Division Facts Matching
Use this website to practice division facts using a matching game format.
Other
Project Happy Child: Free Addition Worksheets
2000 basic addition worksheets are available at this web site. They can be printed and used for a variety of practice purposes. Some helpful hints are included to avoid mindless practice that could quickly become counter productive.
Other
Project Happy Child: Free Subtraction Worksheets
2000 basic subtraction worksheets are available at this web site. They can be printed and used for a variety of practice purposes. Some helpful hints are included to avoid mindless practice that could quickly become counter productive.
Can Teach
Can Teach: Grab and Add
Students will practice their addition skills through this game. Lesson plan indicated for 1st-3rd grades.
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.
University of Cambridge
University of Cambridge: Nrich: Sealed Solution
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.
University of Cambridge
University of Cambridge: Nrich: Game Criss Cross Quiz
Use this online game to improve your subtraction or addition skills while you play on a coordinate plane gameboard. Gain skills in two areas at the same time! This game can also be altered to practice multiplication facts. There is 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.
University of Cambridge
University of Cambridge: Nrich: Super Value Codes
On this one page website sharpen your logic and addition skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Adding Plus
On this one page website sharpen your logic and addition skills while working on this challenge. The solution is available to double check your solution.
Quia
Quia: Addition Flashcards Sums 10 to 18
This website for young children gives them practice adding sums from 10 to 18 in a flashcard type format.
Quia
Quia: Addition Concentration Sums 10 to 18
This website for young children gives them practice adding sums from 10 to 18 in a concentration game type format.
Quia
Quia: Addition Matching Sums 0 to 9
This website for young children gives them practice adding sums from 0 to 9 in a matching type format.