Teach me math addition, subtraction : Racing games

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BIG NEW FEATURES IN ALL SKIDOS GAMES:
- One subscription to play ALL SKIDOS GAMES unlimited!
- New improved interactive learning design
- Minimum parent supervision for an independent learning experience
- Easy-to-access reports to keep an eye on your child’s progress
- New algorithm to make learning even more dynamic
- Now even MORE kid-friendly design for an improved gaming experience
- Minor bug fixes