Fair shares?
Iff
Terminology
Matchless
Which is cheaper?
Training schedule
Mega quadratic equations
Multiplication arithmagons
Can you find the values at the vertices when you know the values on the edges of these multiplication arithmagons?
Arithmagons
Can you find the values at the vertices when you know the values on the edges?
How old am I?
In 15 years' time my age will be the square of my age 15 years ago. Can you work out my age, and when I had other special birthdays?
CD Heaven
All CD Heaven stores were given the same number of a popular CD to sell for £24. In their two week sale each store reduces the price of the CD by 25% ... How many CDs did the store sell at each price?
Symmetricality
Five equations and five unknowns. Is there an easy way to find the unknown values?
Pick's theorem
Polygons drawn on square dotty paper have dots on their perimeter (p) and often internal (i) ones as well. Find a relationship between p, i and the area of the polygons.
Which is bigger?
Which is bigger, n+10 or 2n+3? Can you find a good method of answering similar questions?
Warmsnug double glazing
How have "Warmsnug" arrived at the prices shown on their windows? Which window has been given an incorrect price?