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Speed Grid Challenge, the popular PC game from Primary Games, is now available as an app for Android devices.

Gameplay: Find two numbers in the grid which, when added or subtracted, equal the answer. Can you unlock all the levels?

Speed Grid Challenge at a glance:

- Addresses addition and subtraction skills.
- Eighteen levels of difficulty to unlock.
- 10 questions in level.
- Different questions each time.
- Engaging graphics.
- Simple tap interface.
- Best times are saved to the device for each level.

Keep up to date with all of Primary Games Ltd's development on Facebook:
Twitter: @iRPrimaryGames

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