
321 Totals
A triangular grid contains the numbers one, two and three. Combine them into regions with unique totals. What is the lowest possible value of the region with the highest total?

Multiples Ping Pong
In a 3×3 grid, digits are added to make numbers horizontally and vertically. Each time a digit is added, it must create numbers that are either not a multiple of three or a multiple of three alternatively. The same digit…

TopThreeDigit Times Tables
Create sets of five times tables thoughtfully using links between each one. From each of these, total the highest three digits in the multipliers and product to create a score. What scores are possible?

Triangular Threes
Numbers are arranged in triangular grid starting with 1, 2 and 3. Each time a new triangle is made, its numbers must be used in a calculation to equal 3. Add numbers to the grid in ascending order.