Everlasting Maths Worksheet - Addition is a collection of addition problems ranging from single-digit to three-figure sums. This straightforward addition worksheet features a user-friendly, blackboard-style interface and three levels of problem difficulty. Audio and visual encouragement let you know when you are right and when you need to try again.The program includes the ability to carry a one when a column total is greater than nine. After a set number of correct answers, a rolled up certificate will appear. You can click on this at any time to access the certificate page and print out a personalized copy to encourage improvement.