Q&A - P3 Math

[just888]

chloecube:

chloecube:

sorry just 888, what if the denominator is larger than nemerator? such as this question?


Luke and Matthew had a total of 140 cards. Luke had 7/3 as many cards as Matthew. How many cards must Luke give to Matthew so that they have the same number of cards?

does it mean if luke has 7/3, then matthew has 3/3
total 10 units, each unit is 14
and 2units x 2 = 28
luke must give matthew 28 cards?

Yes. correct. It is something like 2 times more than another.. but then saying as a fraction form.
Where u get those questions?

[chloecube]

just888:

chloecube:

[quote=\"chloecube\"]sorry just 888, what if the denominator is larger than nemerator? such as this question?


Luke and Matthew had a total of 140 cards. Luke had 7/3 as many cards as Matthew. How many cards must Luke give to Matthew so that they have the same number of cards?

does it mean if luke has 7/3, then matthew has 3/3
total 10 units, each unit is 14
and 2units x 2 = 28
luke must give matthew 28 cards?

Yes. correct. It is something like 2 times more than another.. but then saying as a fraction form.
Where u get those questions?[/quote]from my son's school, he's in P3 this year...they are so tough mummy having headache now...

[chloecube]

WCW:

chloecube:

sorry just 888, what if the denominator is larger than nemerator? such as this question?


Luke and Matthew had a total of 140 cards. Luke had 7/3 as many cards as Matthew. How many cards must Luke give to Matthew so that they have the same number of cards?

for Q with \"as many as\" usually the numerator refers to the name on the left and denominator refers to the name on the right
some times the Q will use mixed number so has to know how to change

so for this Q:
Luke had 7/3 as many cards as Matthew
so Luke has 7 units and Matthew has 3 units
to have same amt of unit, Luke has to give 2 to Matthew

10 units = 140
2 units = 14x2 = 28

thks WCW, ur explaination is helpful and this makes it even easier for me to explain to my DS
Thks all

[chloecube]

WCW:

u r welcome

this explanation was given by my teacher donkey yrs ago... i still can rem it hehehe...

i must be dreaming :oops: when the teacher is talking ....that's why i didnt know

[jwxh]

one book cost $4. one pen cost$3. Jack bought some books and pens for $41. He bought 5 more books than pens. How many books did he buy?

plse help! tks

[just888]

jwxh:

one book cost $4. one pen cost$3. Jack bought some books and pens for $41. He bought 5 more books than pens. How many books did he buy?

plse help! tks

Price of 5 books: $4 X 5 = $20

Remaining $ for the books and pen purchase: $41 - $20 = $21

Then guess and check:
3 books and 3 pens = ($3 X 4) + ($3 X 3) = $21

Answer: He brought total 3+5 = 8 books

[jedamum]

just888:

jwxh:

one book cost $4. one pen cost$3. Jack bought some books and pens for $41. He bought 5 more books than pens. How many books did he buy?

plse help! tks

Price of 5 books: $4 X 5 = $20

Remaining $ for the books and pen purchase: $41 - $20 = $21

Then guess and check:
3 books and 3 pens = ($3 X 4) + ($3 X 3) = $21

Answer: He brought total 3+5 = 8 books

Price of 5 books: $4 X 5 = $20

Remaining $ for the books and pen purchase: $41 - $20 = $21

1Group of (1book+1pen) = $4+$3=$7
21 / 7 = 3 groups ie 3books and 3pens

3books + 5(more) books=8books

[SAHM Chew]

A teddy bear cost as much as 3 toy clowns. During a sale, both toys were sold for $12 less. For the new prices, a teddy bear cost as much as 6 toy clowns. How much did the teddy bear cost before the sale? Can anyone provide me with the model and workings? Thanks

[MathIzzzFun]

SAHM Chew:

A teddy bear cost as much as 3 toy clowns. During a sale, both toys were sold for $12 less. For the new prices, a teddy bear cost as much as 6 toy clowns. How much did the teddy bear cost before the sale? Can anyone provide me with the model and workings? Thanks

Hi

http://i44.tinypic.com/r85fdf.jpg\">

cheers.

[SAHM Chew]

Ok, i know already. Thanks