# Number

See also the Collections page, each collection features several number puzzles and games. For example on Mathisfun! there are many number puzzles.

On Transum Mathematics, try Equatero which John Tranter created after having seen the TV game show, Lingo.

The rules are simple – find the expression – any numbers or symbols in the correct place are shown as green, any numbers or symbols that are correct but in the wrong place will be yellow and any numbers or symbols that are not included in the calculation will be  red. Rather an addictive game – but plenty of thinking!

Make a number puzzles with solutions from Brain Food. Many such problems are available, see for example As Easy As 1234 from MathsChallenge.net

Make 24, can you make 24 from the numbers and operations given?

Countdown: Excellent programs for both games can be downloaded free from Chris Farmer’s CSF software site.
For a low-tech solution print out the Make a number puzzles with solutions from Brain Food.
For a new challenge why not try Coundown with Fractions from NrichSee also the Nrich Countdown collection.

For other number puzzles see the Number, one of the Puzzles and Games series of pages.

Factor Game from NCTM Illuminations.

From Dave Miller’s Spire Maths, try his downloadable The Book of Cross Numbers. For more crossnumber puzzles, try these Crossums where all the clues are sums. You could print pdfs from this collection on the Teacher Resources on Line site. From the UKMT Team Maths Challenge archive, you can find a great collection of Crossnumber puzzles.

Puzzles from ilovemathsgames.com, content designed by Emily Hughes

Connect Three (NRICH)

Got It (NRICH game)
The first player who hits the given target wins the game.
Experiment with different targets and sets of numbers.
Can you answer the questions on strategy?

Remainders (NRICH)
Explore division and remainders, then try to guess the number chosen by the computer in as few attempts as possible.

Dominoes Magic Rectangle (NRICH) – form a magic rectangle then a square with Dominoes.
You can use the NRICH dominoes environment. For the traditional set of dominoes, choose a set size of 6.

Fractions and Percentages Card Game (NRICH game)
Match cards with the same value – memory game.

This game from mathFROG allows you to practice the correct order of operations against the clock.

On Math Playground, PEMDAS Exhibit provides great practice for order of operations. Touch an operation to form that part of the operation.

Finding the nine…try this lovely puzzle; see plus magazine – Finding the nine. (There is a link to a very clear solution in the video).