Math - Single and Double digit Addition and Subtraction

Category	Price	Seller	Device
Education	$1.99	Hetal Shah	iPhone, iPad, iPod

The animated numbers show how the carry over works. In no time your child will start doing double digit operations even without realizing it.

Features:
1) Single digit Addition and Subtraction
- 5 levels gradually increasing in difficulty
2) Concept section (little bulb in top left corner of main screen)
- Explains the units and tens position
3) Double digit Addition and Subtraction
- Level 1: Without carryover
- Level 2: With carryover

Free version available to try before buying.