Other tags that relate to Take Ten Sticks
Triangle numbers. Visualising. Generalising. Interactivities. Factors and multiples. Spreadsheets. Handling data. Making and proving conjectures. Square numbers. Creating and manipulating expressions and formulae.There are 15 results
Broad Topics > Properties of Numbers > Square numbers
Time of Birth
Age 11 to 14 Challenge Level:
A woman was born in a year that was a square number, lived a square number of years and died in a year that was also a square number. When was she born?
Triangular Triples
Age 14 to 16 Challenge Level:
Show that 8778, 10296 and 13530 are three triangular numbers and that they form a Pythagorean triple.
Odd Differences
Age 14 to 16 Challenge Level:
The diagram illustrates the formula: 1 + 3 + 5 + ... + (2n - 1) = n² Use the diagram to show that any odd number is the difference of two squares.
Triangles Within Squares
Age 14 to 16 Challenge Level:
Can you find a rule which relates triangular numbers to square numbers?
Generating Triples
Age 14 to 16 Challenge Level:
Sets of integers like 3, 4, 5 are called Pythagorean Triples, because they could be the lengths of the sides of a right-angled triangle. Can you find any more?
Factors and Multiples Puzzle
Age 11 to 14 Challenge Level:
Using your knowledge of the properties of numbers, can you fill all the squares on the board?
Iff
Age 14 to 18 Challenge Level:
Take a triangular number, multiply it by 8 and add 1. What is special about your answer? Can you prove it?
Smith and Jones
Age 14 to 16 Challenge Level:
Mr Smith and Mr Jones are two maths teachers. By asking questions, the answers to which may be right or wrong, Mr Jones is able to find the number of the house Mr Smith lives in... Or not!
Summing Squares
Age 14 to 16 Challenge Level:
Discover a way to sum square numbers by building cuboids from small cubes. Can you picture how the sequence will grow?
Sticky Numbers
Age 11 to 14 Challenge Level:
Can you arrange the numbers 1 to 17 in a row so that each adjacent pair adds up to a square number?
Robert's Spreadsheet
Age 14 to 16 Challenge Level:
Robert noticed some interesting patterns when he highlighted square numbers in a spreadsheet. Can you prove that the patterns will continue?
Filling the Gaps
Age 14 to 16 Challenge Level:
Which numbers can we write as a sum of square numbers?
Square Routes
Age 11 to 14 Challenge Level:
How many four digit square numbers are composed of even numerals? What four digit square numbers can be reversed and become the square of another number?
Digat
Age 11 to 14 Challenge Level:
What is the value of the digit A in the sum below: [3(230 + A)]^2 = 49280A
Four Coloured Lights
Age 11 to 14 Challenge Level:
Imagine a machine with four coloured lights which respond to different rules. Can you find the smallest possible number which will make all four colours light up?
NRICH is part of the family of activities in the Millennium Mathematics Project.