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 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 Nrich? See also the Nrich Countdown collection.
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.
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?
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).