Math Kangaroo
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Last chance to register for the Canadian Math Kangaroo contest on March 19, 2023! Deadline is February 26 at Questions? Email info@mathkangaroocanada.com
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The contest is available in both English and French, in-person and online, for student in Canada. Special conditions apply for the online participation. Training classes are available. Register at
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You can find the rest of the 25 puzzles in the thread below:.
Here is a compilation of the second part of our Math Advent Calendar 2022. You can find all tweets under the #mathadvent hashtag. Day 15, factoring and number theory:.
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RT @AnecdotesMaths: Si vous effectuez le produit de quatre nombres entiers consécutifs et que vous ajoutez 1, vous obtenez un carré parfait….
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RT @AnecdotesMaths: Le nombre premier 1111114111144441142411444411114111111 (qui forme un palindrome) peut être disposé en étoile à 6 branc….
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Day 25, 3D geometry and factoring, was a retelling of a beautiful problem from the 2003 Math Kangaroo contest, grade 7-8. (It was another tough one, but you can try factors and find the answer with ease, or draw a picture!).
Day 25 (final day) of #mathadvent:. 42 sugar cubes packed in one box,.Its bottom's length + width is 9 sugar-cube-sides. Measured in sugar cubes, please work out the box's. sugar-cube height?. Merry Christmas to all who mark it! Find more math puzzles at
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Day 24, algebra and numbers:.
Day 24 of #mathadvent. Just 2 more, just 2 more!.What's 20% of a score?. A score is the English word for twenty:.20% of it's this many.
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Day 23, we saw counting in geometry:.
Day 23 of #mathadvent, hoping you're staying out of the blizzard(s)!. 🌨️☃️🌨️🌨️❄️🌨️🌨️.Two triangles on the page.Intersect at most,.In how many distinct points?.🕯️🕯️🎄🕯️⛄️🕯️🕯️.
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Day 22, a difficult speeds & distances problem. it took 2 tweets!.
Day22 #mathadvent. Abe & Bella'll run in laps.Bella's faster. Abe's head-start.Is exactly 10m ahead."I am faster," Bella said,."Steadily I gain on you. How many laps do we run through.Before we're toe to toe in step?"."Each lap's 100m?" "Yep!"."It'll happen, this I know, (1/2).
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Day 21, combinatorics and combinations:.
Day21 of #mathadvent:. Cat, dog, eel, fox, and kangaroo.decide to have a party. Sitting around a round tree stump.asks cat (who is a smartie),."how many ways are there in all.to squat us, short and bright and tall.around the stump, if I must kneel.To the right of Mrs Pip the eel?
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Day 20, algebra:.
Day 20 of our #mathadvent: soon, the holidays!. Simple poems, let's do one.What's the number, bigger than 1,.That's at once both PRODUCT and SUM.Of a number with itself?.Zero'd work: but there's one more.Surely, now, that number's _______.
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Day 19, the toughest one so far: algebra and time:.
Day 19 of #mathadvent:. 🕰️🕝🤔🕗🕰️.At 2:30am, my glitchy watch was slow.By 10 minutes: more on that below.10:45pm, later that same night,.It was 5 min fast, (showed 10:50 at night). What o'clock was it, tell it to me, please.When the glitchy watch showed the time as is?.
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Day 17 & 18, some geometry:.
#mathadvent Day 17 & Day 18:. Trapezoid: no right angles.What's the number of.Obtuse angles that it has?. This is the most acute angles.(Hint: it's a silly property!) that.Regular polygons can have.Even convex polygons: just look at.Exterior angles. (or an equilateral triangle).
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Day 16, some set theory/combinatorics.
Day 16 of the #mathadvent, some treats.🍪🍫🥟.Eight Christmas treats on the plate for me.Chocolates, cookies, and pasties.They're chocolates or pasties, all but 3.And cookies or chocolates, all but 2.That's enough info, this is true.To find the number of chocolates. 😋.
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Here is a compilation of the second part of our Math Advent Calendar 2022. You can find all tweets under the #mathadvent hashtag. Day 15, factoring and number theory:.
Day 15 of #mathadvent brings a tanka:. The largest digit. Check if your number can be.divided by 𝖎𝖙:.add up the digits, again.ask if 𝖎𝖙's the sum's factor.
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(For example, today's puzzle is a retelling of a 2003 grade 7-8 contest question: can you spot the original version? .
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Day 25 (final day) of #mathadvent:. 42 sugar cubes packed in one box,.Its bottom's length + width is 9 sugar-cube-sides. Measured in sugar cubes, please work out the box's. sugar-cube height?. Merry Christmas to all who mark it! Find more math puzzles at
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🎄🔔Hark how the bells 🔔🎄.Sweet silver bells.All seem to say.Throw cares away. Happy #ChristmasEve to all who celebrate!.
There’s loads of connections between maths and bellringing 🤓. Instead of tunes, ringers memorise sequences of changes - permutations where each bell can only swap with the one immediately before or after. In the video above, 11 bells move with the 12th always ringing last.
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