There are 8 results
Broad Topics > Collections > Secondary Number Play
Factors and Multiples Game
Stage: 2, 3 and 4 Challenge Level: 
A game in which players take it in turns to choose a number. Can you block your opponent?
Product Sudoku
Stage: 3 Challenge Level:
The clues for this Sudoku are the product of the numbers in adjacent squares.
Divisibility Tests
Stage: 3 and 4
This article takes the reader through divisibility tests and how they work. An article to read with pencil and paper to hand.
Got It
Stage: 2 and 3 Challenge Level:
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
American Billions
Stage: 3 Challenge Level:
Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
Summing Consecutive Numbers
Stage: 3 Challenge Level:
Many numbers can be expressed as the sum of two or more consecutive integers. For example, 15=7+8 and 10=1+2+3+4. Can you say which numbers can be expressed in this way?
Missing Multipliers
Stage: 3 Challenge Level:
What is the smallest number of answers you need to reveal in order to work out the missing headers?
Generating Triples
Stage: 4 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?
