Other tags that relate to French Test
Maths Supporting SET. Averages. Spreadsheets. Measures of spread. Real world. Processing and representing data. Generalising. Gradients. Creating and manipulating expressions and formulae. Handling data.There are 16 results
Broad Topics > Algebraic expressions, equations and formulae > Inequalities
Mediant Madness
Age 14 to 16
Challenge Level
Kyle and his teacher disagree about his test score - who is right?
' Tis Whole
Age 14 to 18
Challenge Level
Take a few whole numbers away from a triangle number. If you know the mean of the remaining numbers can you find the triangle number and which numbers were removed?
Square Mean
Age 14 to 16
Challenge Level
Is the mean of the squares of two numbers greater than, or less than, the square of their means?
Biggest Enclosure
Age 14 to 16
Challenge Level
Three fences of different lengths form three sides of an enclosure. What arrangement maximises the area?
Not Continued Fractions
Age 14 to 18
Challenge Level
Which rational numbers cannot be written in the form x + 1/(y + 1/z) where x, y and z are integers?
Two Cubes
Age 14 to 16
Challenge Level
Two cubes, each with integral side lengths, have a combined volume equal to the total of the lengths of their edges. How big are the cubes? [If you find a result by 'trial and error' you'll need to. . . .
Rationals Between...
Age 14 to 16
Challenge Level
What fractions can you find between the square roots of 65 and 67?
Proofs with Pictures
Age 14 to 18
Some diagrammatic 'proofs' of algebraic identities and inequalities.
Unit Interval
Age 14 to 18
Challenge Level
Take any two numbers between 0 and 1. Prove that the sum of the numbers is always less than one plus their product?
Fracmax
Age 14 to 16
Challenge Level
Find the maximum value of 1/p + 1/q + 1/r where this sum is less than 1 and p, q, and r are positive integers.
Inequalities
Age 11 to 14
Challenge Level
A bag contains 12 marbles. There are more red than green but green and blue together exceed the reds. The total of yellow and green marbles is more than the total of red and blue. How many of. . . .
Plutarch's Boxes
Age 11 to 14
Challenge Level
According to Plutarch, the Greeks found all the rectangles with integer sides, whose areas are equal to their perimeters. Can you find them? What rectangular boxes, with integer sides, have. . . .
All-variables Sudoku
Age 11 to 18
Challenge Level
The challenge is to find the values of the variables if you are to solve this Sudoku.
Tet-trouble
Age 14 to 16
Challenge Level
Is it possible to have a tetrahedron whose six edges have lengths 10, 20, 30, 40, 50 and 60 units?
Approximating Pi
Age 14 to 18
Challenge Level
By inscribing a circle in a square and then a square in a circle find an approximation to pi. By using a hexagon, can you improve on the approximation?
NRICH is part of the family of activities in the Millennium Mathematics Project.