Easy learning subtraction - Smart frog kids math

Description This math app is for kids who are in 1 or 2 grade or in the age group 3-7. Learning addition and subtraction. Small kids can easily practise their math skills. How kids can benefit? - Learn the basics of addition and subtraction. - Perfect their math skills by select the right answer of number. Features - Easy to use interface which small kids can understand - Fourty eight levels with nine or ten questions in every level - First level unlocked. Remaining can unlocked by pass the previous level - Just right for math of 1 or 2 grade or 3-7 years old kids - Random new questions, whenever you replay.