Simple Pyramids

With Simple Pyramids kids can practice addition and subtraction. Each brick's number is the sum of the two numbers under it. Place the missing numbers into the empty bricks. By pressing the „Check“-button the application tells you if the entered numbers are correct. Fields with correct entries are colored green. Fields with incorrect entries are colored red. You can also enable auto-checking. Then your entries are checked while you type. Additionally you can quickly create and print a simple worksheet.