Books for AMC 10

by GallopingUnicorn45, Apr 25, 2025, 2:26 AM

Hi all,

So I'm in 4th grade, and I'm having a go at AMC 10 and I've got some questions.
First, how many questions are needed to get Achievement Roll and AIME?
Second, what should I grind to prepare? I took the Intro to Algebra, Counting & Probability, and Number Theory courses already, completed those three books and will be starting the Intro to Geometry book soon. I'm planning to grind the Competition Math for Middle School and try to add in Volume 1: The Basics along with the three books that I already finished, plus geometry. Is there anything else to prepare with besides Alcumus and past papers and those books?

Thanks!

AMC 10

AMC 10 A

number theory

geometry

Alcumus

Basic, Part B

by CarSa, Apr 24, 2025, 8:45 PM

For each four--digit number $\overline {abcd}$ , that is, with $a$ nonzero, let $P(\overline {abcd})$ be the product $(a+b)(a+c)(a+d)(b+c)(b+d)(c+d)$ .
For example, $P(2022) = (2+0)(2+2)(2+2)(0+2)(0+2)(2+2) = 512$ and $P(1234) = (1+2)(1+3)(1+4)(2+3)(2+4)(3+4)$ .
How many numbers $\overline {abcd}$ with at least one $0$ amoung their digits satisfy that $P(\overline {abcd})$ is a power of 2?

This post has been edited 2 times. Last edited by CarSa, Yesterday at 8:48 PM
Reason: yes

algebra

Product

Geometry

by BQK, Apr 24, 2025, 2:58 PM

Help me, Why geometry is so difficult to learn

geometry

Purple Comet Math Meet Recources

by RabtejKalra, Apr 24, 2025, 1:05 AM

I heard that you can take a packet of information to the Purple Comet examination with some formulas, etc. Does anybody have a copy of a guidebook with all the important formulas? I'm just too lazy to write one myself.......

Purple Comet

AMC 10 Preparation over 6 months

by raresillypanther, Apr 22, 2025, 10:18 PM

Hi, I'm currently in 8th grade and I have about 6 months left to prepare for the AMC 10, and I really want to qualify for AIME and get above a 100. I took the AMC 8 this year and did really bad, with a score of 16, and a 35 on the MATHCOUNTS Chapter test. I have a feeling I would get about a 70 on the AMC 10 now, so I want to be able to improve by 30 points in 6 months. Is that possible? I have summer break coming up so I feel like I could study for about 4 hours a day every single day, and I'm willing to if that's what it takes. Do you have any ideas for what resources I should use? I know about Alcumus and I have some of the AOPS books, but not all of them. If you have any tips, let me know. Thank you so much!

1234th Post!

by PikaPika999, Apr 21, 2025, 8:54 PM

I hit my 1234th post! (I think I missed it, I'm kinda late, :oops_sign:

)

But here's a puzzle for you all! Try to create the numbers 1 through 25 using the numbers 1, 2, 3, and 4! You are only allowed to use addition, subtraction, multiplication, division, and parenthesis. If you're post #1, try to make 1. If you're post #2, try to make 2. If you're post #3, try to make 3, and so on. If you're a post after 25, then I guess you can try to make numbers greater than 25 but you can use factorials, square roots, and that stuff. Have fun!

1: $(4-3)\cdot(2-1)$

Did you get into Illinois middle school math Olympiad?

by Gavin_Deng, Apr 19, 2025, 9:05 PM

Loading poll details...

I am simply curious of who got in.

poll

What is the most important topic in maths competition?

by AVIKRIS, Apr 19, 2025, 5:29 PM

Loading poll details...

I think arithmetic is the most the most important topic in math competitions.

arithmetic

Pre Algebra

poll

Facts About 2025!

by Existing_Human1, Jan 1, 2025, 4:12 PM

Hello AOPS,

As we enter the New Year, the most exciting part is figuring out the mathematical connections to the number we have now temporally entered

Here are some facts about 2025:
$2025 = 45^2 = (20+25)(20+25)$ $2025 = 1^3 + 2^3 +3^3 + 4^3 +5^3 +6^3 + 7^3 +8^3 +9^3 = (1+2+3+4+5+6+7+8+9)^2 = {10 \choose 2}^2$
If anyone has any more facts about 2025, enlighted the world with a new appreciation for the year

(I got some of the facts from this video)

This post has been edited 2 times. Last edited by Existing_Human1, Jan 1, 2025, 8:39 PM

Nats 2024 cutoff Map

by MathyMathMan, Apr 4, 2024, 1:15 AM

2024 MATHCOUNTS Nats Cutoff Map

Greetings!

I should first and foremost thank those who helped with this project along the way. This idea is fully inspired by past South Dakota alumni that attended my school. The original ideas were created by @anser and @techguy2. I would also like to thank @peace09 for agreeing to collaborate with me on the scores and ratings during the 2024 state competitions throughout the country.

@peace09's post Cutoffs and Scores

Please state your state and cutoff score. (4th place) You can also provide the 3rd, 2nd, and 1st place scores as well. People from different territories can also provide their state's scores as well. I will try my best to keep this map updated until we get all the scores. You are also free to discuss states and nationals stuff too if you want.

(Btw congratulations to everyone who made nationals, I hope to see you guys there too!)

Nats qualification scores

Attachments:

This post has been edited 4 times. Last edited by MathyMathMan, Apr 8, 2024, 3:51 AM

MATHCOUNTS

Columbia

HCSSiM

Submit

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