Q&A - P5 Math

[Jamesbond]

Maths Hub:

Jamesbond:

http://i48.tinypic.com/23r7950.jpg\">

Pl help me in this.....

Hi,

Each division is 0.2. The pointer points between 2.4 to 2.6 and the answer should be 2.48.

Cheers.

:thankyou: Maths Hub.

[Jamesbond]

http://i46.tinypic.com/2vngi21.jpg\">


Pl help....

[MathIzzzFun]

Jamesbond:

http://i46.tinypic.com/2vngi21.jpg\">


Pl help....

using ratio and equating ratio parts is the usual approach..

shaded --> 2 units
A --> 10 units, A-unshaded --> 8 units
B --> 5 units, B-unshaded --> 3 units
Total area--> 10 units + 3 units = 13 units
Total unshaded area --> 8 units + 3 units = 11 units
Fraction of figure that is unshaded --> 11/13

cheers

[Jamesbond]

MathIzzzFun:

Jamesbond:

http://i46.tinypic.com/2vngi21.jpg\">


Pl help....

using ratio and equating ratio parts is the usual approach..

shaded --> 2 units
A --> 10 units, A-unshaded --> 8 units
B --> 5 units, B-unshaded --> 3 units
Total area--> 10 units + 3 units = 13 units
Total unshaded area --> 8 units + 3 units = 11 units
Fraction of figure that is unshaded --> 11/13

cheers

:thankyou:

[tayobus]

MathIzzzFun:

tayobus:

:?: :salute: :thankyou:


An equal number of male & female runners participated in a marathon race.
After 980 female runners and 350 male runners dropped out of the race, the number of female runners left was 1/6 the number of male runners.
What was the total number of runners at the start of the race?
(Can help by showing the model-drawing?)

Hope this comes out ok... sketch on mobile...

http://i48.tinypic.com/16h3xo7.jpg\">

cheers.

:thankyou: VERY MUCH!

[tayobus]

There were twice as many red marbles as yellow marbles in a box.

When 2 red marbles were put into the box and 6 yellow marble were taken out, there was 3 times as many red marbles than yellow marble in the box.
What was the total number of marbles at 1st?
:?: :imdrowning: :thankyou:

[snowball]

snowball:

pr5 school hw, pls help to solve... :?:


Q1
Mr Tan painted 2/5 of his flat yesterday. Today, he continued painting and now he has painted 5/6 of his flat. How much of the flat did he paint today?

Q2
Kate has 3/5m of ribbon. She has 1/4m of ribbon less than Siti. How much metres of ribbon does Siti have?

Q3
Gopal had a coil of wire. He cut 2/7m away and used the remaining 1/6m to make a hook. Find the length of the original coil of wire.

Q4
Mary takes 5/6 h to rake the leaves. David takes 1/4h less than Mary to rake the leaves. Bala takes 1/6h longer than David. How long does Bala take to rake the leaves?

Anyone know whether i can find above solution in \"Onsponge assessment bk?

TIA

still :?: :?: :frustrated: :imdrowning: :imdrowning:
anyone there to help me solve the above?

[Oracle]

Hi Tianzhu/007, I have another question here:


A badminton racket costs $24 more than a table tennis bat and $9 more than a basketball. Benedict bought 2 badminton rackets, 3 table tennis bats and 3 basketballs and paid a total of $279. How much did the basketball costs?

Thank you very much.

[snowball]

Oracle:

Hi Tianzhu/007, I have another question here:


A badminton racket costs $24 more than a table tennis bat and $9 more than a basketball. Benedict bought 2 badminton rackets, 3 table tennis bats and 3 basketballs and paid a total of $279. How much did the basketball costs?

Thank you very much.

I try....

Badminton racket = TT +$24
Badminton racket = Bketball + $9

(TT+24)=Bketball+9
Bketball= (TT+24)-9
Bketball= TT+15

Given: 2Badminton + 3TT + 3Bketball = 279

2Badminton= 2TT+48
3TT=3TT
3Bketball = 3TT+45

So, 2Badminton + 3TT + 3Bketball = 279
also means:
2TT+48+3TT+3TT+45=279
8TT+93=279
8TT=186
TT=23.25

Bketball = TT+15
=23.25+15
=$38.25 ANS

Am I correct ?

[MathIzzzFun]

snowball:

snowball:

pr5 school hw, pls help to solve... :?:


Q1
Mr Tan painted 2/5 of his flat yesterday. Today, he continued painting and now he has painted 5/6 of his flat. How much of the flat did he paint today?

Q2
Kate has 3/5m of ribbon. She has 1/4m of ribbon less than Siti. How much metres of ribbon does Siti have?

Q3
Gopal had a coil of wire. He cut 2/7m away and used the remaining 1/6m to make a hook. Find the length of the original coil of wire.

Q4
Mary takes 5/6 h to rake the leaves. David takes 1/4h less than Mary to rake the leaves. Bala takes 1/6h longer than David. How long does Bala take to rake the leaves?

Anyone know whether i can find above solution in \"Onsponge assessment bk?

TIA

still :?: :?: :frustrated: :imdrowning: :imdrowning:
anyone there to help me solve the above?

Q1.
painted today --> completed - painted yesterday
= 5/6 - 2/5
= 13/30

Q2.
Kate --> 3/5 m ribbon
Siti --> 1/4 more --> 3/5 m + 1/4 m = 17/20 m

Q3.
Original length --> cut away + remaining
= 2/7 m + 1/6m
= 19/42 m

Q4.
Mary --> 5/6h
David --> 1/4h less than Mary --> 5/6h - 1/4 = 7/12 h
Bala --> 1/6 h more than David --> 7/12h + 1/6 h = 9/12h = 3/4 h

cheers.