Q&A - P3 Math

[teh_oh]

spunky:

teh_oh:

1 - 3/8 - 1/8 = ____


For the above type of math questions, will marks be deducted if the child did not reduce the answer to '1/2' after getting '4/8'?
Thanks.

no marks should be deducted unless the question specifies that answer must be in the simplest form.

However, as a good habit, teach the child to reduce at all times especially simple fractions like 4/8

Thanks spunky.

[paranoid mum]

Adrian & Zen shared some marbles equally. After Zen received 58 marbles from Adrian, how many more marbles than Adrian did Zen have?


The answer is 116 marbles??

I can’t figure out why?

[vlim]

paranoid mum:

Adrian & Zen shared some marbles equally. After Zen received 58 marbles from Adrian, how many more marbles than Adrian did Zen have?


The answer is 116 marbles??

I can't figure out why?

let me try huh..but I don't know how to show it here by model so below is my explanation:

Adrain has A + 58 marbles
Zen has A + 58 marbles also
So when Zen received 58 marbles from Adrain then
Zen would have A + 58 +58 = A + 116 marbles
and Adrain would have A marbles
so Zen has 116 marbles more then Adrain!

Hope my explanation is correct

[teh_oh]

paranoid mum:

Adrian & Zen shared some marbles equally. After Zen received 58 marbles from Adrian, how many more marbles than Adrian did Zen have?


The answer is 116 marbles??

I can't figure out why?

Initially,
A[====]
Z[====]

After giving
A[==]-58
Z[====]==]+58

hence 58+58=116.

sorry, i'm not so good at using this platform to illustrate models.

[Bunny27]

Need help to solve below question:


John and Jane shared some marbles in the ratio 7:3. When John gave Jane 12 marbles, he found that they each had the same of marbles. How many marbles did Jane have at first?

Thanks!

[iFruit]

Bunny27:

Need help to solve below question:


John and Jane shared some marbles in the ratio 7:3. When John gave Jane 12 marbles, he found that they each had the same of marbles. How many marbles did Jane have at first?

Thanks!

In the begninning,

John:Jane:Total = 7:3:10

Since the total didn't change, The total at end must be

John:Jane:Total = 5:5:10

For a difference of 2 (3->5), Jane would have 3 at first.
For a difference of 12, Jane would have at first = 12/2 x 3 = 18

[ttyh]

theron and ahmad were given same number of rubber bands each.

After theron used 50 rubber bands and ahmad used 86 rubbber bands, theron had 5 times as many rubber bands as ahmad. how many rubber bands did each of them had at first?

[small]

paranoid mum:

Adrian & Zen shared some marbles equally. After Zen received 58 marbles from Adrian, how many more marbles than Adrian did Zen have?


The answer is 116 marbles??

I can't figure out why?

Hi paranoid mum,

Hope this helps,cheers !!

http://farm5.static.flickr.com/4135/5437558977_1d79db903a_z.jpg\">

[small]

ttyh:

theron and ahmad were given same number of rubber bands each.

After theron used 50 rubber bands and ahmad used 86 rubbber bands, theron had 5 times as many rubber bands as ahmad. how many rubber bands did each of them had at first?

Hi ttyh,

Please find the solution, hope it helps.

http://farm6.static.flickr.com/5300/5437601247_1ff30a084f_z.jpg\">

[ttyh]

Thanks Small!