Daddy

Ivy had 3 times as many stamps as Jacky.. After Ivy gave away 19 stamps and Jacky gave away 3 stamps, both of them had the same number of stamps left. How many stamps did Jacky have at first?


2 units --> 19-3=16
1 unit (Jacky) --> 16/2=8

Correct?
How to draw the model?

http://i58.tinypic.com/200wivq.jpg\">

leng2005:

http://i60.tinypic.com/30dgdjq.jpg\"> Hi all, need help to solve this problem. Thanks!

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[quote]
May I know it asking Calvin was 7 times. But thats only 6 units in the model as I needs to explain to my boy.
[/quote]If you look at Calvin's bar, it is 7u = (u+12) + (u+12) + (u+12).
It means the balance of 4u = 12+12+12 = 36, so u = 9.

U can re-arrange the u's together and the 12's together within the same bar. May be easier to see.

jolenekoh:

Need helps please. Model please too


Calvin had thrice as many sweets as Mike. If Mike gave away 12 sweets to his sister, Calvin would have 7 times as many sweets as Mike. How many sweets did Calvin have?

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SAHM_TAN:

numeric:

[quote=\"ectanz\"]Please help me on the following question. TIA!


Adam has $140 and his brother has $80. How much money must Adam give his brother so that Adam will have $10more than his brother?

http://i62.tinypic.com/3533wue.jpg\">

Do you know if marks will be penalised if do not draw the arrow? Thank you.[/quote]I don't know... I'm neither a teacher nor tuition teacher. But I don't feel marks should be deducted if the arrow isn't there, so long the solution is clearly demonstrated.

ectanz:

Please help me on the following question. TIA!


Adam has $140 and his brother has $80. How much money must Adam give his brother so that Adam will have $10more than his brother?

http://i62.tinypic.com/3533wue.jpg\">

chloecube:

Andre had $120 less than Ben.after Andrea spent 2/5 of his money and Ben gave away 1/3 of his money, ben had $152 more money than Andre.

a) how much money did Andre had at first?
b)what fraction of the total sum of money at first belongs to Ben?

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Daddy:

Thank both.


I still not understand.
when A is double is it same as A is twice.
How come A is one unit for both ans.

It's the interpretation. The word \"when\" doesn't mean it has actually happened. It is just describing a scenario.

Daddy:

Thank ttlkbs and speedmaths


another question to ask.

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Thanks.

http://i62.tinypic.com/o582eb.jpg\">

Desmen76:

Bao Ming wants to buy 6 shirts but he is short of $7. If he buys 5 shirts, he will have $11 left. How much money does Bao Ming have?

ans: 101

BM = 6S -7
BM = 5S + 11

Therefore,
6S - 7 = 5S + 11
6S - 5S = 11 + 7
S = 18

BM = (5 x 18) + 11 or (6 x 18) - 7
BM = 101 (ans)

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