30 SECOND CHALENGES

3 Level Challenges

The 3 Level Challenge E-Books are collections of fun challenges for adults and children to improve their mental arithmetic skills.
Each e-book contains 48 challenges at Beginner, Intermediate and Advanced levels, making a total of 144 challenges per e-book.

£3.99
(preview)
3-Level Challenge E-Book 1
£3.99
3-Level Challenge E-Book 2
£3.99
3-Level Challenge E-Book 3
£3.99
3-Level Challenge E-Book 4
£3.99
3-Level Challenge E-Book 5
£3.99
3-Level Challenge E-Book 6
£3.99
3-Level Challenge E-Book 7
£3.99
3-Level Challenge E-Book 8
£3.99
3-Level Challenge E-Book 9
£3.99
3-Level Challenge E-Book 10
£17.99


3-Level E-Books 1-5
3-Level E-Books 1-5
£17.99


3-Level E-Books 6-10
3-Level E-Books 6-10
£29.99


3-Level E-Books 1-10
3-Level E-Books 1-10