This is a challenging game to see who can make an expression that adds to exactly 24.
http://www.sheppardsoftware.com/mathgames/make24/make24.htm

This is a challenging game to see who can make an expression that adds to exactly 24.
http://www.sheppardsoftware.com/mathgames/make24/make24.htm

Students have to carrry out a sequence of numeric operations mentally in order to match the target number, Quite chalenging.
http://www.sheppardsoftware.com/mathgames/arithmetic/arithmetic.htm

Students mentally subtract numbers from 50 to reach the target number.
http://www.sheppardsoftware.com/mathgames/Add%20Like%20Mad%20Math/subtra...

Add weights to the scale to balance the poddle. Adding numbers less than 10.
http://pbskids.org/cyberchase/games/algebra/

Early decimal computation. Students have to add 1 digit decimals to fill in the missing sections of track.
http://pbskids.org/cyberchase/games/decimals/

The classic memory game, in a flipchart implementation. This version reviews mental percent questions. The questions are easily changed to suit any topic.

Choose 3 large numbers and 3 small numbers, and then choose a random target. How many ways can you find to use the small numbers plus some operations and brackets to make an expression that equals the target?

And start the clock when there are only 30 seconds left.

Your calculator is missing some of its keys! Which answers can you still get?
Six levels, from easy to challenging!

The classic Connect 4 game, but students have to first correctly evaluate the numerical expresson before they are allowed to drop their chip.
http://www.shodor.org/interactivate/activities/OrderOfOperationsFou/