[size=150]Pick a number between 0 and 99.[br]Use the sliders to show the correct numbers of tens and unit blocks for your number.[br]When you think you are correct, click the 'Am I right?' box to see if the blocks match your number. [br][list][*]If it does, great job![/*][*]If it does not, move the sliders until they do match. [/*][/list]Click the box, pick a new number, and try again.[/size]