iMath Games 1: Up the Wall

One-player games against the clock. Each player has five minutes to put as many numbers on the walls as possible. Can you get in the Up the Wall top 5? Click on the links below to play the games.
Sums	Differences	Product, sum, difference
Sums (positive and negative numbers)	Differences (positive and negative numbers)	Product, sum, difference (positive and negative numbers)
Instructions Best viewed in full screen mode: press F11 if you are using Internet Explorer. Use the slider to choose the level you want to start at. Level 1: five numbers have to be put on the wall. Level 6: all ten numbers have to be put on the wall. More points are scored at the higher levels. Click on the go button to play the game. Drag the numbers at the bottom of the wall on to the wall. Each number on the wall (apart from the bottom row) must be either the sum, difference or product of the two numbers below. For example, in the picture on the left, 24 is the sum of 9 and 15. The polygon people will tell you whether it's the sum, difference or product. You have five minutes to fill as many walls as possible.