Q&A - P3 Math

[imacsg]

Hi ifruit,

Thanks. interesting formula to remember.

[tianzhu]

femi:

tianzhu:

[quote])Aminah and Shanthinee had 128 bookmarks altogether.Aminah gave 1/4of her bookmarks to Geraldine. Shanthinee have the same number of bookmarks left. How many bookmarks had shanthinee have at first?

Hi

Are the bookmarks given to Geraldine or Shanthinee?

Please confirm if the numbers are 128 and 1/4.

Best wishes

sorry, after the Aminah gave 1/4 of her bookmarks to Geraldine,Shanthinee gave 37 of her bookmarks to geraldine.now , ....... ....... ..... .....[/quote]Hi

Hope this helps.

Best wishes.

http://farm5.static.flickr.com/4113/5065785853_538870dd9e_b.jpg\">

[2DMommy]

pls help me with this question :


1/4 + 3/4 = 1
1/8 + 3/8 + 5/8+7/8 = 2
1/12 + 3/12 + 5/12 + 7/12 + 9/12 +11/12 = 3

Find the sum of :

1/208 + 3/208 + 5/208 + 7/208 …203/208 + 205/208 + 207/208

[Dharma]

2DMommy:

pls help me with this question :


1/4 + 3/4 = 1
1/8 + 3/8 + 5/8+7/8 = 2
1/12 + 3/12 + 5/12 + 7/12 + 9/12 +11/12 = 3

Find the sum of :

1/208 + 3/208 + 5/208 + 7/208 ......203/208 + 205/208 + 207/208

By looking at the pattern

1/208 + 3/208 + 5/208 + ...... + 207/208 = 52
Sum of series is the denominator divided by 4
So, 208 / 4 = 52

Check :

1 + 207 = 208
No. of pairs = 104/2 = 52
1/208 + 3/208 + 5/208 + ... + 207/208 = 52 x 208/ 208 = 52

[2DMommy]

Thanks Dharma !


Another question :

John and Peter had an equal number of stickers. After Peter gave 27 stickers to John, John had 4 times stickers as Peter. How many stickers did Peter have at first?

[Dharma]

2DMommy:

Thanks Dharma !


Another question :

John and Peter had an equal number of stickers. After Peter gave 27 stickers to John, John had 4 times stickers as Peter. How many stickers did Peter have at first?

John : 1u + 27 = 4p
Peter : 1u - 27 = 1p

4u - 108 = 1u + 27
3u = 135
1u = 45

Number of stickers Peter had at first =45

[2DMommy]

Another question :


Ahmad and Bata had a total of 7 cards at first. After Bata bought more cards and Ahmad lost cards, Bata now has 3 cards more than Ahmad. Find the number of cards Bata had at first?

[the kiasu student]

2DMommy:

Another question :


Ahmad and Bata had a total of 7 cards at first. After Bata bought more cards and Ahmad lost cards, Bata now has 3 cards more than Ahmad. Find the number of cards Bata had at first?

It's quite tough, its either there's some more information missing from this question or its not suitable for a P3 or P4 student. I'm a P6 student, but I personally think that there's a little information missing here..... you can say that at first, Ahmad had more than Bata or Bata more than Ahmad, that first information is very crucial as it will affect the model drawn my the pupil.

[livewith_vanilla]

2DMommy:

Another question :


Ahmad and Bata had a total of 7 cards at first. After Bata bought more cards and Ahmad lost cards, Bata now has 3 cards more than Ahmad. Find the number of cards Bata had at first?

I think there is information lost here.
I'm in p6, and I don't think its solvable.

[2DMommy]

livewith_vanilla:

2DMommy:

Another question :


Ahmad and Bata had a total of 7 cards at first. After Bata bought more cards and Ahmad lost cards, Bata now has 3 cards more than Ahmad. Find the number of cards Bata had at first?

I think there is information lost here.
I'm in p6, and I don't think its solvable.

Sorry sorry, some typo error , the question should read :

Ahmad and Bata had a total of 76 cards at first. After Bata bought 15 more cards and Ahmad lost 8 cards, Bata now has 3 cards more than Ahmad. Find the number of cards Bata had at first?