In (5 [21] 8) and (3 [17] 7), the middle number is made from the outside numbers by the same rule. Leo the lion tests +, −, × and ÷ to find it (twice the second number, plus the first) and completes (4 [?] 6). Then crack a dividing rule yourself.
Ellie the elephant cracks sequences where the gaps grow (1, 3, 6, 10, 15, ?) and sequences with two patterns woven together (3, 20, 6, 18, 9, 16, ?). Then find the next number in 64, 32, 16, 8, ? and learn to check the gaps of the gaps.
A = 2, B = 4, C = 5, D = 8 and E = 10. Bruno the bear shows how to swap letters for numbers, do the sum, then swap the answer back into a letter: A × C = 10, which is E. Then solve (E − D) × B and remember to use brackets first.
3 (12) 4, 5 (20) 4, 6 (?) 3. Rosie the rabbit works out how the outside numbers make the number in the brackets (multiply them), checks the rule on both examples, then uses it to find 18. Then solve 9 (5) 4, 12 (7) 5, 15 (?) 6 yourself, and learn which rules to try first.
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