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🧠 Today's puzzle — AMC 8 2006 Problem 7

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2006-07

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Circle X has a radius of π. Circle Y has a circumference of 8π. Circle Z has an area of 9π. List the circles in order from smallest to largest radius.
November 8, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AJHSME 1997 Problem 18

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1997-18

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Last week small boxes of facial tissue were priced at 4 boxes for $5. This week they are on sale at 5 boxes for $4. The percent decrease in the price per box during the sale was closest to
November 10, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2024 Problem 9

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2024-09

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
All of the marbles in Maria's collection are red, green, or blue. Maria has half as many red marbles as green marbles and twice as many blue marbles as green marbles. Which of the following could be the total number of marbles in Maria's collection?
November 6, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Felix 2023 Problem 11

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2023-felix-11

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Emma came third in a dance competition for girls. 3 dancers came between her and the last girl. How many dancers took part in the competition?
November 9, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Junior 2018 Problem 22

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2018-junior-22

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Four positive numbers are given. Take three of them, find their mean, then add the fourth number. This can be done in four ways, giving the results 17, 21, 23 and 29. Which is the biggest of the four numbers?
November 11, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Student 2011 Problem 5

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2011-student-05

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
All four-digit numbers whose digits add up to 4 are written down in descending order. In which position does the number 2011 appear?
November 7, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2003 Problem 9

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2003-09

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Art, Roger, Paul, and Trisha bake cookies that are all the same thickness, in the shapes shown below (dimensions in inches). Each friend uses the same amount of dough, and Art's batch makes exactly 12 cookies. Art's cookies sell for 60 cents each. To bring in the same total from one batch, how much should one of Roger's cookies cost, in cents?
November 4, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Junior 2025 Problem 7

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2025-junior-07

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Sarah has a bag of 18 balls numbered from 1 to 18. What is the smallest number of balls Sarah must remove from the bag to be sure that she has removed at least three prime numbers?
November 5, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AJHSME 1987 Problem 3

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1987-03

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
2(81 + 83 + 85 + 87 + 89 + 91 + 93 + 95 + 97 + 99) =
November 2, 2026 at 3:00 AM
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November 3, 2026 at 5:28 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2008 Problem 1

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2008-01

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Susan had 50 dollars to spend at the carnival. She spent 12 dollars on food and twice as much on rides. How many dollars did she have left to spend?
October 31, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Student 2016 Problem 26

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

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
In a solid cube P is a point on the inside. We cut the cube into 6 (sloping) pyramids. Each pyramid has one face of the cube as its base and point P as its top. The volumes of five of these pyramids are 2, 5, 10, 11 and 14. What is the volume of the sixth pyramid?
November 3, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AJHSME 1987 Problem 11

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1987-11

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
The sum 2 1⁄7 + 3 1⁄2 + 5 1⁄19 is between
October 29, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Student 2014 Problem 30

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2014-student-30

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
In the forests of a magical island kingdom there are three kinds of animals: lions, wolves and goats. Wolves can eat goats, and lions can eat both wolves and goats. Since it is a magical island kingdom, a wolf that eats a goat changes into a lion, a lion that eats a goat changes into a wolf, and a lion that eats a wolf changes into a goat. To begin with there were 17 goats, 55 wolves and 6 lions on the island. After some time no more eating is possible. What is the maximum number of animals that can still be on the island?
November 1, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Student 2024 Problem 26

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2024-student-26

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Sylvia has several fair 12-sided dice, each with the numbers 1 to 12 written on their faces. If she rolls all the dice simultaneously, the probability of rolling exactly one 12 is equal to the probability of not rolling a 12 at all. How many dice does Sylvia have?
October 30, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Ecolier 2016 Problem 20

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2016-ecolier-20

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Lisa's dogs have 18 more legs than noses. How many dogs does Lisa have?
October 28, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2008 Problem 10

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2008-10

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
The average age of the 6 people in Room A is 40. The average age of the 4 people in Room B is 25. If the two groups are combined, what is the average age of all the people?
October 27, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AJHSME 1987 Problem 16

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1987-16

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Joyce made 12 of her first 30 shots in the first three games of this basketball game, so her seasonal shooting average was 40%. In her next game, she took 10 shots and raised her seasonal shooting average to 50%. How many of these 10 shots did she make?
October 25, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Junior 2016 Problem 28

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2016-junior-28

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Four sportswomen and sportsmen are sitting around a round table for dinner. They do four different sports: ice skating, skiing, hockey and sledging. The person who skies sits to the left of Sandra. The person who ice skates sits opposite Benjamin. Eva and Philipp sit next to each other. A woman sits next to the person who plays hockey. Which sport does Eva do?
October 26, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AJHSME 1996 Problem 24

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1996-24

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
The measure of angle ABC is 50°. AD bisects angle BAC , and DC bisects angle BCA . The measure of angle ADC is
October 23, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Kadett 2017 Problem 10

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2017-kadett-10

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Some girls are standing in a circle. The teacher makes them do a headcount: Bianca says one, her neighbour says two, and so on. If they count in a clockwise direction, Antonia says five. If they count in an anticlockwise direction, Antonia says eight. How many girls are forming the circle?
October 24, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Student 2022 Problem 8

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2022-student-08

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
All integers from 2 to 2022 which can be written using only the digits 0 and 2 are written in ascending order in a list. Which number is the middle number on that list?
October 22, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2020 Problem 13

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2020-13

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
Jamal has a drawer containing 6 green socks, 18 purple socks, and 12 orange socks. After adding more purple socks, Jamal noticed that there is now a 60% chance that a sock randomly selected from the drawer is purple. How many purple socks did Jamal add?
October 21, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — AMC 8 2017 Problem 10

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2017-10

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
A box contains five cards, numbered 1, 2, 3, 4, and 5. Three cards are selected randomly without replacement from the box. What is the probability that 4 is the largest value selected?
October 19, 2026 at 3:00 AM
littleredmath.bsky.social
🧠 Today's puzzle — Math Kangaroo Kadett 2015 Problem 11

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2015-kadett-11

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath
A cyclist covers a distance of 5 m in one second. The wheels of his bike each have a circumference of 125 cm. How many complete turns does each wheel make in 5 seconds?
October 20, 2026 at 3:00 AM