Your child can become a math ninja with Flashcard Ninja. This educational app makes learning addition and subtraction fun with interactive ninja graphics.

Embark on the journey to become a math ninja. The master writes math problems in the sand and your task is to choose the correct answer from the surrounding wooden numbers. Use your finger to move the numbers until you find the correct answer. Then... you attack!

If you choose the correct answer, you are given a green pearl and move on to the next problem. Solve 10 problems in a row, and you will be rewarded with a trophy for your virtual trophy room. But beware! Each question has a time limit, and you have three chances to answer correctly.

Visit your personal trophy room, engrave your name on your trophies, and record your very own "attack" sound. This version of Flashcard Ninja covers numbers 1–20.