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Special Numbers

My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?

Your Number Is...

Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?

First Forward Into Logo 6: Variables and Procedures

Learn to write procedures and build them into Logo programs. Learn to use variables.

Shape Products

Age 11 to 14 Challenge Level:
Charlie noticed that B, D, E and G all contain a purple square.
Alison noticed that F and H both had a shape that appeared in the product and the answer.
Becky noticed that the answer to D was part of the product in B.

Can you use any of their ideas to help you to deduce any of the shapes?