Description: 30 Second Challenge has been developed to improve numeracy skills in arithmetic and mental mathematics. These original brain training games, which make mathematics fun for all ages, increase powers of memory and speed. Spend 15 minutes each day tackling the carefully graded challenges and, in no time at all, you will be able to perform mental gymnastics quickly and accurately.
brain training (111) math puzzles (14) arithmetic problems arithmetic practice number problems number practice number challenges mental mathematics number skills speed tests
These number skill starter books ensure you know your times tables and number bonds, while helping you learn about fractions, percentages, square roots etc, giving you a solid foundation for handling numbers easily.
These are the very popular brain training books that are for all ages and abilities from Beginners to Intermediate to Advanced. They have the format used in the newspapers. You follow number trails which lead you to the answer at the end using the skills learned from the earlier starter books.
These books are different. They turn the 30 Second Challenges on their head! You see a short number trail and you are given the answer. You have to calculate where you started! They go from easy to interesting!