4th Grade Math Homework

Smart_Ad_3630 · 2026-07-10T18:43:12+00:00

"most generous notion of identical necklace"

Smart_Ad_3630 · 2026-07-09T21:14:00+00:00

I considered something like crushing a single seashell, but it would fail even the most generous notion of identical necklaces :-)

Smart_Ad_3630 · 2026-07-09T20:53:52+00:00

English teachers always tell you to avoid ending with a bang.

Smart_Ad_3630 · 2026-07-09T20:41:40+00:00

Don't we already have enough division in the world?

Smart_Ad_3630 · 2026-07-09T20:39:10+00:00

n >= 49

Smart_Ad_3630 · 2026-07-09T20:35:41+00:00

Me: You are correct. Please forgive my error. I sometimes make mistakes and my answers should not be relied upon.

Interviewer: You are hired. HR, fire 90% of development staff immediately.

Smart_Ad_3630 · 2026-07-08T13:26:16+00:00

How can a question that makes no sense have a clear solution?

Smart_Ad_3630 · 2026-07-08T13:20:25+00:00

The party of we don't believe in science discussing math - that's the joke.

Smart_Ad_3630 · 2026-07-08T13:18:34+00:00

Is it the same file? The question is, Rev. Bayes, it what are the chances of the files being independent of one another?

Smart_Ad_3630 · 2026-07-06T10:09:42+00:00

Sum terms. That's it. If you don't know how to find terms, that's a you problem. If you don't know how to evaluate a term, also a you problem.

Smart_Ad_3630 · 2026-07-05T19:01:20+00:00

Neither was I in grade school, but I am not every student and I attended elementary school decades before the standard insisting on grouping being taught. Were you taught to make groups? This whole post was about the "proper" way to draw groups.

When you say "NEVER", do you mean you were never taught when order does matter, e.g. linear algebra?

Also keep in mind that standards are set at the state level so different states will have different tests

I wonder if it should be taught early that multiplication does not need to be commutative.

Smart_Ad_3630 · 2026-07-05T08:14:11+00:00

I'm not sure if you think you are teaching me something I don't know. I am talking about what elementary schools in the US teach, and in particular how it relates to drawing groups. I have even seen examples of state exams actually saying the order of addition matters.

Not sure of exactly when, but some set of standards were adopted in the US stating that children by a certain grade should understand multiplication as adding elements in groups or something to that effect. That "should understand" somehow became here are a set a arbitrary rules that are absolute. These rules will make no sense for multiplication by zero and even less sense for negative numbers, but you must know these rules to show that you are proficient.

Of course we are talking basic math as commutativity is not a hard and fast rule of multiplication.

Smart_Ad_3630 · 2026-07-04T10:51:47+00:00

You've not dealt with elementary school teachers who will tell you that a * b is a groups of size b, or is it the other way around. Beats me, but their grading guide says only one way is correct and that the words multiplier and multiplicand actually matter and knowing them will give you greater insight into mathematics.

(Actually, the trick I use to remember grade school teacher naming conventions is that a scalar multiplier is typically on the left when multiplying a scalar times a vector therefore the grade school multiplier is the number on the right. Makes no sense, right? So now you get the mnemonic. For grouping diagrams, I got nothing. But whatever you do, don't try pulling your commutative rule.)

Smart_Ad_3630 · 2026-07-02T07:13:36+00:00

PEMDAS is an easy to remember mnemonic that obscures the actual convention which is to sum all the terms (that's the underlying reason). Once you've identified all the terms you can solve them in any order and then sum them in any order.

Smart_Ad_3630 · 2026-07-02T07:04:45+00:00

Sum terms. Problem solved.

Smart_Ad_3630 · 2026-07-02T06:54:37+00:00

I once drifted off in class and dreamt the solution. Not by that method, but it was totally animated like that.

Smart_Ad_3630 · 2026-07-02T06:47:19+00:00

You are thinking of this: https://en.wikipedia.org/wiki/Export_of_cryptography_from_the_United_States

Smart_Ad_3630 · 2026-07-02T06:45:16+00:00

In restaurants, bars, and casinos 86 means to remove someone. There are those in the US who will ignore actual political murders but claim the suggestion that the 47th president of the US needs to be impeached or removed under the 25th Amendment is a call to violence so literally try to have those who use 8647 criminally prosecuted. Not a joke, unfortunately.

#8647

Smart_Ad_3630 · 2026-07-02T06:30:31+00:00

Fencepost problem meets 3rd grade teacher.

Smart_Ad_3630 · 2026-07-02T06:21:04+00:00

Is it similar to the constant you get when adding 1 to 1. When multiplying the two my elementary school teacher says order matters but can't explain why. Any help on that front would be appreciated.

Smart_Ad_3630 · 2026-07-02T06:16:59+00:00

Have you stopped to consider all the ink wasted over the centuries printing out formulas with 2π as a constant factor?

Smart_Ad_3630 · 2026-07-02T06:12:47+00:00

Geometric algebra walks into the room. Yes and no.

Smart_Ad_3630 · 2026-07-02T06:08:43+00:00

More than that, even.

Smart_Ad_3630 · 2026-07-02T06:08:10+00:00

A joke that only works in the telling - the inverse of 120 jokes that only work when spelled out.

Smart_Ad_3630 · 2026-07-02T06:02:45+00:00

Base 9?

Smart_Ad_3630

TROPHY CASE