North London Girls Consortium maths 2015 results

[mum2016]

I've done all the questions but we need one post with all answers really - not had time to do that yet. Perhaps the OP could update his from responses?

Hi Guest55,

Did you manage question 25th a?
what answer would you say is right 27th or 28th Dec?

Thanks

[Ladymuck]

LadyMuck ,
Thanks a lot for a method for question 37. Its a tricky question for adults; leave alone 10 yr olds!

For :
41 A
My DD should be AEDFG because it says you don't have to use all the stations. She says that her route is 57MIN.

This is different to AEDBCFG which has a length of 58MIN

41B
57 minutes plus 16mins gets 73mins
Considering that it has passed 4 stations (A,E,D,F) to get to G.

41A AEDBCFG = 7+4+7+18+10+7 = 53 mins, not 58.
41B ABCFG = 21+18+10+7+12= 56 plus 12 mins for 3 stations (B,C,F) = 68 mins.

[mum2016]

Thanks a lot Ladymuck.
We were missing some point obviously; rightly explained by you.

As for 41b) why are we not loosing 4 min at station A? Is it because it says that when it passes through the station and A is not passing any station?

[Ladymuck]

As for 41b) why are we not loosing 4 min at station A? Is it because it says that when it passes through the station and A is not passing any station?

Yes, you are "starting from" A not "passing through". Similar questions will look at timetables when you have an "arrive at" and "depart from" time.

A lot of maths questions can often turn on vocabulary. I still remember not being able to visualise what "tiling a chair" meant in order to calculate the relevant forces when it appeared on a key exam paper.

[PDDad]

UPDATED ANSWER LIST:

I couldn't update the original post (not sure if that can even be done), but here is the updated answer list (thanks to all the contributors):

Group 1 Maths 2015

1. 5632
2. 4556
3. 4781
4. 494
5. a) 0.562 b) 2007
6. 36 + 64 = 100
7. 27
8. 0.603
9. 87, 75
10. 12 and 5
11. a) 38 b) 9 c) 10
12. 75%
13. 1.79
14. a) -10degrees b) 9 degrees
15. a) 876512 b) 876215 c) 1278 d) 7509
16. a) 27 b) 50mls c) 3 weeks
17. 31
18. a) 1224 b) 2496 c) 2.448 d) 5.1
19. a) 16 b) 3/8
20. £ 2.65
21. +3 then divide by 2
22. a) 8.3cm b) 83mm
23.
24. a) E b) D
c) A has one line horizontal ; B has two lines through middle perpendicular to each other; C has no lines; D has one vertical line through middle and E has two lines perpendicular to each other in diagonal direction.
d) two square wide parallelogram, running diagonally across 5 vertical square spaces down or
five square wide parallelogram, running diagonally two squares in height.
25. a) 9 hours b) 1/3 c) working = 3 sectors (where chart can be divided into 12 sectors); relaxing in 1.5 sectors and other activities as 3.5 sectors.
26. a) D b) E c) A
27. a) 20 min 24 sec b) 5 min 6 secs c) 6min 14 secs
28. a) section overlapping F and T only b) outside all circles c) square
29. a) .. b) 5, 4 c) ?16
30. 8cm
31. 364+ 273; 771 - 494
32. 7
33. a) 21 b) 63 c) 19 d) 105
34. a) 20 b) 2 c) 6.5 d) 0 e) 9 f) 16
35. a) 555 b) 888 c) 499.5 d) 962
36. a) 1, 4, 9, (7), 7,9, 4, 1, (9)
b) The numbers repeat themselves every 9 numbers
c) i) 1 ii) 4 iii) 9
37. a) 14 b) 54
38. a) 14 b) 7 c) -3 d) 13



NLC Group 2 2015 Maths

1. 3023
2. 1667
3. 24192
4. 336
5. 81
6. a) 40.5 b) 0.7
7. 1.747
8. 87
9. 3/7
10. 3.043, 3.304, 3.34, 3.4
11. a) 4 larger outer triangles and 4 inner smaller triangles shaded
b) 4/9
12. a) 29 b) 3 c) 1/4 or 0.25
13. a) 7000 b) 8120
14. 4 and 14
15. a) 1 , 6, -8
b) *3 +1
16. 1713
17. £2.90
18. 14 pieces
19. 150 g
20. 36
21. 72.75
22. a) 7.5 b) 150 c) 888 d) 2700
23. (lines of symmetry x2 perpendicular to each other, crossing each other through the middle of shape; nil for second shape)

24. a) 70g b) 4.25
25. a) 27th Dec 2002 b) Saturday
26. d
27.
28. a) 6,1 b) 6,5 c) line co-ordinates 0,7 -> 4,7
29. 12 face, 20 edge, 10 vertices
30. a) 10,11 b) 37 c) A equally; B most likely
31. 10.40
32. 8am
33. a) i) 3 and 1/2 ii) b) Annabel, shoe size 4 because the mode is the condition that is most frequent
34. d
35. 43cm2
36. a) 11.20 b)
37. 48
38. a=5; b= 2; c= 10; d=12; e=6 ; f=23
39. a) 8 b) 8; c) 125;
40. a) 10x11 =110 ; b) 1001; c) 99 and 101 d) 212 e) 10301,20102 or 11111
41 a)AEDBCFG b)ABCFG


PS- mum2016, I'm still getting 27th Dec 2002 for Q25a. Mainly because counting backwards from 5th Jan to 4th Jan, would be 1 day and not 2 days. The question states that Amelia was born exactly 9 days earlier and thus if it were 1 day earlier, that would be the 4th Jan, and so on... making, it 27th Dec for 9 days before the 5th Jan.

[vnmomma]

for grp 1, i have:

5 a) 0.569
19 a) 8
29 c) 19

for grp 2, i have:
7. 1.746
9. 5/9
22 b) 37.5
25 a) 27th December 2002
27 b) train 3
33 i) 3.5; ii) 4
36 b) 6
39 a) 12

[sunandcloud]

Group 1
9. DD answered as 89, 71. I understand 87, 75 is possibly better but isn't there a chance that 89,71 is also right as repeated pattern of -7 and -4 with working to show the method?

100 (-7) 93 (-4) 89 (-7) 82 (-4) 78 (-7) 71

[Guest55]

NLC Group 2 2015 Maths

1. 3023
2. 1667
3. 24192
4. 336
5. 81
6. a) 40.5 b) 0.7
7. 1.746
8. 87
9. 5/9
10. 3.043, 3.304, 3.34, 3.4
11. a) 4 larger outer triangles and 4 inner smaller triangles shaded
b) 4/9
12. a) 29 b) 3 c) 1/4 or 0.25
13. a) 7000 b) it says altogether so we need to add them so I got 15610
14. 4 and 14
15. a) 1 , 6, -8
b) [x 3] [+1]
16. 17:13
17. £2.90
18. 14 pieces
19. 150 g
20. 36
21. £72.75
22. a) 7.5 b) 37.5 c) 888 d) 2700
23. (lines of symmetry x2 perpendicular to each other, crossing each other through the middle of shape; two for second shape)

24. a) 70g b) 4.25
25. a) 27th Dec 2002 b) Saturday
26. drawing
27. I have the times but awkward to post ... train 3
28. a) 6,1 b) 6,5 c) line co-ordinates 0,7 -> 4,7
29. 12 faces, 20 edges, 10 vertices
30. a) 10,11 b) 37 c) A equally; B Di most likely
31. 10.40
32. 8cm
33. a) i) 3 and 1/2 ii) 4 b) Annabel, '12' is the frequency not the value of the most frequent item.
34.
Safiya..14 ... 6 ..... 30
Tosin .. 4 ... 16 ... -20
Ursula . 8 ... 12 ... 0
35. 43cm2
36. a) 11.20 b) 6 mangos
37. 48
38. a=5; b= 2; c= 10; d=12; e=6 ; f=23
39. a) 12 b) 8; c) 125;
40. a) 10x11 =110 ; b) 1001; c) 99 and 101 d) 212 e) 10301, 20102 or 11111
41 a)AEDBCFG b)ABCFG

I hope this now includes all the correct answers.

Could someone post the other paper so I can check that?

[sunandcloud]

also Group 1

24. (d) Paralleogram has no line of symmetry.
I would do either
trapezium with one line of symmetry(isosceles trapeziums).
(i.g. base 3 and 7, height 2)

or

kite (i.g. diagonal 5 and 4)

[kuku123]

Thanks a lot to all the parents who have contributed in the effort of putting the answers in the forum.

Great Help!!