My sons 5th grade math homework

[kenimpzoom]

Can you find the missing number in the pattern?

1,4,27,256,_

5,15,25,35,45,50,51,_

2,3,4,6,6,9,8,_

I think I have the last one, but the first two have me stumped.

Ken

 

[bjcsc]

Re: My sons 5th grade math homework

The first is definitely 3125 and I think the second is 52.

(and hopefully you got 12 for the third)

 

[kenimpzoom]

Re: My sons 5th grade math homework

How did you get those?

Yes, 12 for the third one.

 

[bjcsc]

Re: My sons 5th grade math homework

Well on the first one breaks down to 1¹, 2², 3³, 4⁴, and thus 5⁵ or 3125.<P>

For the second one, starting at 0, that is every number containing the numeral 5:
5,15,25,35,45,50,51, then 52 (and then 53,54,55,56,57,58,59,65,etc..)

 

[kenimpzoom]

Re: My sons 5th grade math homework

I wasnt thinking "powers" for 5th grade. Guess I need to not try to dumb it down.

Makes sense on the second one.

Thanks a ton.

Ken

 

[Dunaruna]

Re: My sons 5th grade math homework

[colour=blue]5th grade = what age? 10?

 

[kenimpzoom]

Re: My sons 5th grade math homework

Yep, 10 yrs old.

Last year of elementary school.

Ken

 

[Reel Poor]

Re: My sons 5th grade math homework

Call me dumb, but how did you get 12 for the third one ?

 

[Pony]

Re: My sons 5th grade math homework

I think starting with the 2, every other numer you add 2, starting with the 3, every other number you at 3.

 

[Reel Poor]

Re: My sons 5th grade math homework

Soooo, Why are they teaching math puzzels ? You only need to know this $#!+ if you have to help your kids with math homework ?

 

[Ron G]

Re: My sons 5th grade math homework

I dont think i can pass 5th grade math:%

 

[bjcsc]

Re: My sons 5th grade math homework

These "puzzles" are only about math on the surface. Math is just the vehicle, critical thinking is the goal. Solutions to problems (math and other) are sometimes simpler than they seem, sometimes not the obvious, and always require thought. There are life lessons hidden in those math puzzles...

 

[kenimpzoom]

Re: My sons 5th grade math homework

Puzzels are a combo of math and recognizing patterns.

Both are important in science and statistics.

Luckily my son is a wiz at math, just not to good on reading. Getting better though.

Ken

 

[CN Spots]

Re: My sons 5th grade math homework

Why can't they hide a life lesson in a pretty picture? Danged old stinky scientists.


spots

 

[harkawy]

Re: My sons 5th grade math homework

Well on the first one breaks down to 1¹, 2², 3³, 4⁴, and thus 5⁵ or 3125.<P>

For the second one, starting at 0, that is every number containing the numeral 5:
5,15,25,35,45,51, then 52 (and then 53,54,55,56,57,58,59,65,etc..)

So what happened to 50? Is it chopped liver? It does have a 5 in it.

 

[ZmOz]

Re: My sons 5th grade math homework

I think number 3 is the same formula they use for gas prices. :^

 

[bjcsc]

Re: My sons 5th grade math homework

Well on the first one breaks down to 1¹, 2², 3³, 4⁴, and thus 5⁵ or 3125.<P>

For the second one, starting at 0, that is every number containing the numeral 5:
5,15,25,35,45,51, then 52 (and then 53,54,55,56,57,58,59,65,etc..)

So what happened to 50? Is it chopped liver? It does have a 5 in it.

Sorry about that. It was in the original series I just forgot to include it...I'll edit it in...