Two More Homework Questions...

[buzzlightyea]

Room is a rectangle 4 metres by 3 metres what length of carpet gripper is needed to go round the perimiter ?
7m 12m 14m or 24m?


What is the range of temperatures over these 5 days ?
30oc 26oc 29oc 29oc 27oc

TIA

[Cloverjo]

Seriously?

[buzzlightyea]

please humour me, my son got marked wrong on both of these..

and i cant for the life of me see why?

[mikey4444]

Lets ignore these daft questions....life is too short !

[Cloverjo]

What answers did he give?

[aelmpvw]

well the everest question was answered correctly and marked wrong

[buzzlightyea]

Thank you people..

Perhaps the answerbank shoud be renamed to

We only answer certain questions and we deem not to be beneath us...

[dannyk13]

1.14- 4+3 +4+3
2.Are you asking for the average temperature? the range would be 26o to30o

[Cloverjo]

Buzz, if you'd mentioned in the beginning that your son had been marked wrong for these questions. We wouldn't have replied in such a way.

As it was it looked like questions that anyone could easily answer.

[EDDIE51]

The answer to the first question is 14. 4 + 3 + 4 + 3 =14
The answer to the 2nd question is 4 the lowest is 26 the highest is 30 so that is a range of 4
Or do you mean the average ? (30 + 26 + 29 + 29 + 27 ) divided by 5
which is 28.2 .

[dannyk13]

Buzz
How old is the child?
Would the teacher be looking for the method rather than the answer?

[JJ109]

I try and think why these would be marked wrong'
In the second one, two answers could be given. Either the actual range 26 oc to 30 oc, or alterntively just the difference 4 oc.
Depending on what was required and which answer your son gave, he could be marked wrong.

with the Everest one was a percentage required (8848 - 5364)/ 5364

Just a thought

[Old_Geezer]

It'd be nice to know what answers were marked incorrect and then maybe we could figure out why.

[Old_Geezer]

Isn't range inclusive ? Rather than simply difference.

[dannyk13]

Also the age of the child is relevant to the teacher's expectation.

[Old_Geezer]

Judging from the questions I can't see thst they're good ones to show working in the answer. I'd guess this was upper primary school and required answers only. Not ideal for teacher not to explain correct working/answer though; otherwise little has been learnt.

[Old_Geezer]

THAT >:-(

[fiction-factory]

I hope the teacher spelll perimeter as perimeter.
I would be interested to know what answers your son put. (Strictly speaking none of the above answers would be right unless the gripper was of negligible width, otherwise there would be a slight overlap at the corners.)

I am sure the expected answer for the second question is 4°C as Eddie says- range has a specific meaning in maths which differes from that regularly used in everyday conversations.
Maybe your son omitted the units in these answers or used the wrong units- eg cm or m²