Addition master

Addition Master is a math game that helps children to increase their math skills. It has 3 difficulties: easy, medium and hard. You have to do addition with 50 questions.
-Easy: using number from 5 to 20 and you don’t do wrong more than 15 question in 60 seconds.
-Medium: using number from 30 to 60 and you don’t do wrong more than 15 question in 55 seconds.
-Hard: using number from 50 to 100 and you don’t do wrong more than 15 question in 50 seconds.
Play hard and you will increase your skill.