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 Post subject: Maths questions pleasePosted: Mon Feb 02, 2015 7:33 pm

Joined: Sat Jan 03, 2015 4:26 pm
Posts: 256
￼￼ Could someone please kindly confirm if my answers are correct for the question below.
Thank you

The timetable below shows information about the overnight train

London Euston Station (Fri)depart 1957
Birmingham International (Fri)depart 2107
Glasgow (Sat)arrive 0645

How long does the train take
a) from London Euston to Birmingham International-------------Answer 1hr 10mins

b) from London Euston Station to Glasgow-----------------Answer 9hrs 38mins

much appreciated.

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 Post subject: Re: Maths Question pleasePosted: Mon Feb 02, 2015 7:46 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 14005
Look at (b) again - how long is it to midnight? A number line might help.

19:57 ........................... 00:00 .......................... 06:45

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 Post subject: Re: Maths Question pleasePosted: Mon Feb 02, 2015 8:37 pm

Joined: Thu Mar 14, 2013 6:30 pm
Posts: 583
round up and round down to the nearest whole hour, then add on the minutes used for the rounding

for instance, 1957 is 2000 (with 3 mins used for rounding)

2107 is 2100 using 7 minutes for rounding down

so its a total of 1 hr and 10 minutes (7+3, from the rounding)

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 Post subject: Re: Maths Question pleasePosted: Mon Feb 02, 2015 8:54 pm

Joined: Tue Mar 04, 2008 2:28 pm
Posts: 2772
I think for b) you have mis read the question and calculated from Birmingham instead of from Euston?

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 Post subject: Re: Maths Question pleasePosted: Mon Feb 02, 2015 9:26 pm

Joined: Sat Jan 03, 2015 4:26 pm
Posts: 256
thank you All

yes correct i misread the question to b). dd is well ahead of me. she wrote 10hrs 48 mins. was marking the questions whilst she was away so had no chance to correct me.

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 Post subject: Re: Maths Question pleasePosted: Tue Feb 03, 2015 9:05 pm

Joined: Sat Jan 03, 2015 4:26 pm
Posts: 256
Another one please kindly help correct

Question
Janice has 10 pens

5 are blue pens and 5 are red.

8 are felt tip pens

Fill in the blanks in this statement.

There are between .............. and ................. blue felt tip pens

dd wrote 3 and 5.

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 Post subject: Re: Maths Question pleasePosted: Tue Feb 03, 2015 9:22 pm

Joined: Sat Jan 03, 2015 4:26 pm
Posts: 256

not sure why i can't copy and paste diagrams onto this forum. would make life so much easier for people that are helping .

Ok this one is Nos 26 of the Channing School 11+ sample papers

but heres the question without a diagram.

This shape has an area of 63cm2.

it is made from square tiles .

Find the perimeter of the shape.

any ideas please?how do we derive the perimeter from just telling us that the area is 63?

Thank you

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 Post subject: Re: Maths Question pleasePosted: Tue Feb 03, 2015 9:43 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 14005
The question about Janice is correct ... (compare that with the other one we did)

There are 7 equal squares so what is the area of each square?

Once you know that, then you can work out the side length of each square and hence the perimeter.

Get back to me if the hint is not enough help.

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 Post subject: Re: Maths Question pleasePosted: Tue Feb 03, 2015 9:48 pm

Joined: Sat Jan 03, 2015 4:26 pm
Posts: 256
Thanks a million Guest55.

Yes very similar to the one you helped with. i actually remembered when i was posting this.

will get back to you re; the perimeter question.

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 Post subject: Re: Maths Question pleasePosted: Tue Feb 03, 2015 10:00 pm

Joined: Sat Jan 03, 2015 4:26 pm
Posts: 256
ok so area of each square is 63/7 =9

perimeter of each square will be 4x side = 4x3 = 12

perimeter of all squares = 12 x7 = 84...

hmmn am not convinced at my working though . is this correct?

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