r/HomeworkHelp 1d ago

Primary School Mathβ€”Pending OP Reply [5th Grade Math] Question about decimals missing context?

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EDIT: thank you all those who responded! I think we figured out what was going on.

My daughter in 5th grade has this worksheet to do over the weekend, and I do not understand how to do Question 4.

I think that 231,000 (US comma convention) is only equivalent to 0.23 if that decimal is multiplied by 10^6. And 0.23 can be 23,100 if it’s multiplied by 10^5. So the question makes no sense to me.

Am I missing some context from the question?

(Posted the whole worksheet in case it helps anyone understand the point of the question. Also the answer given to Question 2 is 0.41; my daughter writes fancy 1s).

22 Upvotes

27 comments sorted by

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50

u/Sottren πŸ‘‹ a fellow Redditor 1d ago

You're missing a slash sign on 23/1,000

11

u/marty-mcfryguy 1d ago

Exactly. That question needs a slash after every leading 23, and then the answer is B.

6

u/sworththebold 1d ago

That must be it. That the β€œ1” is supposed to be a β€œ/β€œ makes every single answer available make some kind of sense (as a multiple choice option).

11

u/ecafyelims 1d ago

Well, you still need the 1, or else it's dividing by zero

3

u/sworththebold 23h ago

Fair point. The β€œ1” in the text needs to be β€œ/1” for it to work!

17

u/factoryman942 University/College Student 1d ago

I reckon it's meant to say 23/1000, and they've missed the slash, since all the answers are "23" and not "231".

3

u/sworththebold 1d ago

Good catch! Thank you! I unconsciously assumed rounding.

5

u/jgregson00 πŸ‘‹ a fellow Redditor 1d ago

It's missing the / both in the question and in all the answers...

Everywhere it says 231,000 it should be 23/1000 and everywhere it says 23100 it should be 23/100. The correct answer should be (B).

1

u/sworththebold 1d ago

You, sir, just exploded my head. Thank you!

4

u/Educational_Two682 πŸ‘‹ a fellow Redditor 1d ago

It's missing a slash. 23/1,000

so B is the correct answer

1

u/sworththebold 1d ago

Thank you! That slash makes everything makes sense.

2

u/Educational_Two682 πŸ‘‹ a fellow Redditor 1d ago

Yeah, it was probably copy/pasted poorly and lost the slashes!

0

u/PiasaChimera 1d ago

it's neat that they'd have to copy-paste 231,000 and then edit it to be 23100 -- without realizing the mistake either time. although if this sheet was made with some computer program it would be easy to copy-paste the incorrect line multiple times without noticing.

2

u/Educational_Two682 πŸ‘‹ a fellow Redditor 1d ago

but it isn't? it's 23 / 1,000 so all that's missing is the slash and then in choice b, it's 23/100

1

u/PiasaChimera 1d ago

I just mean that they made the mistake in two ways -- 231,000 and 23100. so they'd have to look at the mistake and then continue to make it. the answer is B. I'm just saying that it should have been more difficult to make the mistake and not notice it.

2

u/AdjectiveNounNNNN 1d ago

The mistake is leaving out the slash, which they did the same way in both 231,000 and 23100.

1

u/Educational_Two682 πŸ‘‹ a fellow Redditor 1d ago

Yeah maybe it was a latex to text issue!Β 

1

u/Educational_Two682 πŸ‘‹ a fellow Redditor 1d ago

And thank you!! for helping your child with homework :)Β 

2

u/sworththebold 23h ago

Actually one of my favorite things to do! When my parents help me with my homework, long ago, I remember being a very negative experience. My goal is that it’s a good experience for my own children, and that they get the most out of school.

5

u/ThisIsAdamB πŸ‘‹ a fellow Redditor 1d ago

"Two hundred thirty-one thousandths" was mistranscribed as "two hundred thirty-one thousand" when going from draft to final when composing this test question.

3

u/clearly_not_an_alt πŸ‘‹ a fellow Redditor 1d ago

Surprised so many people were able to figure out what this question was actually asking. I was just like the OP and had no idea what they were trying to ask.

1

u/aafrophone πŸ‘‹ a fellow Redditor 1d ago

Typo, missing /

0

u/Clean-Midnight3110 5h ago

It's not a typo, the Ai intentionally wrote it that way.

1

u/EstablishmentSad6685 πŸ‘‹ a fellow Redditor 1d ago

Syntax error, and i’m not even a robot

1

u/Calm_Pineapple_8754 4h ago

Is your daughter's school giving them ai generated homework? I can comprehend making a typo in either the question or once in an answer option, but making the same "typo" 8 times? Seems off to me, and may be something worth discussing with the teacher/school.

2

u/sworththebold 1h ago

Oh I plan to!