Monthly Archives: July 2018

DAY 196:

The Main Challenge Here’s a 10-step number trail involving the four arithmetical operations, some 3-digit numbers, plus fractions and percentages. Start with the number 2, then: add three hundred and eighty –292 +106 –50% 1/2 of this multiply by nine 1/3 … Continue reading

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DAY 195:

The Main Challenge In this Kakuro-style question, can you list ONLY way possible to make 16 when adding together five unique digits from 1-9? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, … Continue reading

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DAY 194:

The Main Challenge This is similar in style to the challenges found at our popular Mathelona number puzzle pocket book. Click the link for more details. ◯   +   ◯   =   ◯ ◯   +   ◯   = … Continue reading

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DAY 193:

The Main Challenge When playing Mathematically Possible, players must analyse which numbers can (or can’t) be made from the three numbers rolled on their dice. Full details of our board game can be found at MathPoss.com. Using the numbers 3, 4 and … Continue reading

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DAY 192:

The Main Challenge This is a number puzzle taken from my scrapbook of brainteasers, a favourite of mine, and used regularly as a mental maths starter in my workshops over the years! You have a 6-sector dartboard containing the numbers … Continue reading

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DAY 191:

The Main Challenge This is a very special challenge personally endorsed by Robert Sun, inventor of the world-famous maths card game, 24game®. The idea is very simple; to make 24 from the card below by using the four numbers exactly … Continue reading

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DAY 190:

The Main Challenge This is the 3rd and final part of a number puzzle posted initially on DAY 10, then on DAY 180, and made famous by French writer, George Perec. The challenge involves using seven 7′s (7, 7, 7, 7, 7, 7 … Continue reading

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DAY 189:

The Main Challenge Can you insert the numbers 1-9, exactly once each, into the gaps below so that all three lines work out arithmetically? ◯   +   ◯   =   ◯ ◯   –   ◯   =   … Continue reading

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DAY 188:

The Main Challenge Try the following number challenge similar to the ones found in our Mathelona pocket book of challenges. Click the link for details. Your task is to make all four lines below work arithmetically by placing the following 16 digits into the 16 … Continue reading

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DAY 187:

The Main Challenge A Keith Number, made famous by Mike Keith, is worked out in a not-too-dissimilar way to Fibonacci Numbers. If you like playing around with numbers, have a go at this fun concept.  The first 2-digit Keith Number, … Continue reading

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