#mathKangaroo
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dbarman.bsky.social
Math Kangaroo session 1 of 2 at @trianglemath.bsky.social is underway! #mtbos #iteachmath #mathisfun #mathCompetition #mathKangaroo mathkangaroo.org/mks/
March 20, 2025 at 8:47 PM
trianglemath.bsky.social
We just finished hosting two sessions of the #mathKangaroo #mathCompetition serving about 60 students grades 1-11. #mtbos mathkangaroo.org/mks/
March 21, 2025 at 2:03 AM
trianglemath.bsky.social
#mathKangaroo is underway! #mtbos #mathTest #mathCompetition @carrboronc.bsky.social mathkangaroo.org
March 19, 2026 at 9:00 PM
dbarman.bsky.social
I compiled some puzzles that may interest 2nd - 6th graders; they are available at tinyurl.com/mathInstPuzz..., and including content used by permission from Math Kangaroo USA mathkangaroo.org, Liz Judge, and Math in English mathinenglish.com. #mtbos #iteachmath #mathisfun #mathPuzzles #mathKangaroo
Puzzles for grades 2-6.pdf
tinyurl.com
March 25, 2025 at 3:46 PM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2008 Problem 17

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2008-17

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Ms. Osborne asks each student in her class to draw a rectangle with integer side lengths and a perimeter of 50 units. All of her students calculate the area of the rectangle they draw. What is the difference between the largest and smallest possible areas of the rectangles?
September 25, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AJHSME 1994 Problem 20

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1994-20

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Let W , X , Y , and Z be four different digits selected from the set {1, 2, 3, 4, 5, 6, 7, 8, 9} . If the sum W X + Y Z is to be as small as possible, then W X + Y Z must equal
September 23, 2026 at 3:00 AM
dbarman.bsky.social
I'm going to ask my level 4 students these #mathKangaroo problems (freely available at mathkangaroo.org/mks/practice/free-question-samples) in class. The first two I think they'll find easy; for the logic problem I wonder how they'll represent the problem. #mtbos #iteachmath #mathisfun
November 13, 2025 at 7:59 AM
dbarman.bsky.social
The first #mathKangaroo #mathTest #mathCompetition session @carrboronc.bsky.social Drakeford Library is over and the second session is underway. #mtbos #iteachmath
March 19, 2026 at 11:20 PM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Kadett 2016 Problem 26

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2016-kadett-26

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Natural numbers, no two the same, are written on a board. The product of the two smallest is 16, and the product of the two largest is 225. What is the sum of all the numbers on the board?
September 22, 2026 at 3:00 AM
kpuscience.bsky.social
🎉 KPU is excited to host the Canadian Math Kangaroo Contest on March 23! 🧮🌟

100 local students (Grades 1–12) will tackle this global math challenge—good luck, young mathematicians! 🙌

📢 Registration is full. More info: mathkangaroo.ca

#MathKangaroo #KPU #STEM
March 18, 2025 at 10:30 PM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2022 Problem 16

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2022-16

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Four numbers are written in a row. The average of the first two is 21, the average of the middle two is 26, and the average of the last two is 30. What is the average of the first and last of the numbers?
September 21, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2017 Problem 3

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2017-03

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
What is the value of the expression √(16 · √(8 · √4)) ?
September 19, 2026 at 3:00 AM
trianglemath.bsky.social
We are ready to welcome students to Thursday’s Math Kangaroo #mathCompetition! Tests and answer keys are ready to go and table assignments for students made. #mtbos #mathKangaroo
March 17, 2025 at 5:32 PM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2017 Problem 19

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2017-19

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
For any positive integer M , the notation M ! denotes the product of the integers 1 through M . What is the largest integer n for which 5 n is a factor of the sum 98! + 99! + 100! ?
June 23, 2026 at 3:00 AM
dbarman.bsky.social
This should be a very nice event - @maria-naturalmath.bsky.social is a friend of mine who shares beautiful #mathisfun and I teach for #mathKangaroo with its lovely problems!
July 20, 2026 at 11:36 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Junior 2016 Problem 10

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2016-junior-10

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Sven writes five different single-digit positive whole numbers on a board. He realises that no sum of two of these numbers is equal to 10. Which of the following numbers has Sven definitely written on the board?
August 1, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Felix 2018 Problem 13

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2018-felix-13

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Alice has 3 white, 2 black and 2 grey pieces of paper. First she cuts every piece of paper that is not black into two pieces. Then she cuts in half every piece of paper that is not white . How many pieces of paper does she have in the end?
September 20, 2026 at 3:00 AM
maria-naturalmath.bsky.social
Join our Saturday, July 25 live online event for students in grades 3-5 with Math Kangaroo and Natural Math. Learn art-inspired problem-solving in the context of factors and multiples. Register at us02web.zoom.us/meeting/regi... #MathSky #iTeachMath #MathKangaroo #MTBoS
Welcome! You are invited to join a meeting: Math Kangaroo Presents: A Natural Math Book Workshop for Grades 3-5. After registering, you will receive a confirmation email about joining the meeting.
Event Description: Meet Kara Shane Colley, the author of "My Hundred Friends" (Natural Math), a book about a cozy world where the mathematics of factors and multiples means friendship. Do you like co...
us02web.zoom.us
July 19, 2026 at 9:20 PM
dbarman.bsky.social
The next monthly free (registration reqd) online Math Gym momath.org/math-gym/ @momath.bsky.social is today at 4p or 7p ET. #mathisfun #mathKangaroo problems are shared; students pick level they want to try & join a breakout room to discuss. Highly recommended for grades 1-12! #mtbos #iteachmath
April 16, 2025 at 5:47 PM
dbarman.bsky.social
I'm looking forward to sharing these Math Kangaroo USA problems (w/permission from mathkangaroo.org/mks/practice...) w/my level 3 students today. I bet they'll find the 2nd one difficult maybe just trying all the answers, but guess-and-check works great. #mtbos #iteachmath #mathisfun #mathKangaroo
February 20, 2025 at 4:40 PM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2013 Problem 17

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2013-17

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
The sum of six consecutive positive integers is 2013. What is the largest of these six integers?
August 6, 2026 at 3:00 AM
dbarman.bsky.social
I'm going to share these sample #mathKangaroo problems in level 3 class @trianglemath.bsky.social today. The last one is difficult! I hope Ss will enjoy my error recovery. (Freely avail fr mathkangaroo.org/mks/practice... and shared w permission fr Math Kangaroo USA.) #mtbos #iteachmath #mathisfun
March 13, 2025 at 3:47 PM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2014 Problem 4

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2014-04

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
The sum of two prime numbers is 85. What is the product of these two prime numbers?
July 15, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2025 Problem 23

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2025-23

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
How many four-digit numbers have all three of the following properties? The tens digit and ones digit are both 9. The number is 1 less than a perfect square. The number is the product of exactly two prime numbers.
May 29, 2026 at 6:51 PM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2017 Problem 21

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2017-21

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Suppose a , b , and c are nonzero real numbers, and a + b + c = 0. What are the possible value(s) for a | a | + b | b | + c | c | + abc | abc | ?
June 5, 2026 at 3:00 AM