Subtract Eggs for iOS

Subtract Eggs app can help kids to know how to borrow when subtracting , this app use hatch out ducks to help kids understand subtraction.For example: 82-27 =?you can follow the steps to do subtraction by regrouping:1. 2 is less than 7, so we need to regroup 1 ten as 10 ones, drag 1 ten to ones blue box.2. After regroup, there are 7 tens and 12 ones.3. Drag the eggs to the marked place to hatch out 7 ducks4. Drag the 2 tens eggs to the marked place to hatch out 20 ducks5. Check the remaining number of eggs, enter the answer, press the green check button, check the answersThere are 90 questions and 3 levels in this app:1 star level : subtraction that don't need regrouping2 stars level: 2 digits minus 1 digit and need regrouping3 stars level: 2 digits minus 2 digits and need regrouping This app can help children to learn subtraction more easy and have more fun!If you are interested in this app, you can watch the following video: http://www.youtube.com/watch?v=TlmpziB8TKIAs a MOMs with Apps member,we follow the "Know What's inside" best practices for kids' apps. http://momswithapps.com/