Start Arithmetic - math drills and times tables
Start Arithmetic is a great way of practicing addition, subtraction, multiplication and division.
You can customise the difficulty by setting the smallest and largest numbers added or multiplied together.
The free version allows sums of up to 7+7 or 7x7. The full version, available as an in-app purchase, extends this limit to 20x20 - giving you a great mental arithmetic workout!