Maths-11-plus-Dulwich-Paper-G

425

258

1596

6.9

Make 62.1 to 621 to remove the decimal

Then work through and you 69. Then add the decimal back in to get 6.9

630

1. 1. Calculate by doing 3/4 x 840
   2. “of” in maths means multiply
   3. ³/₄ * ⁸⁴⁰/₁
   4. ^{Simplified……..3}/₁ * ²¹⁰/₁
   5. 630

2.03; 2.300; 2.302; 2.32

1. If not sure, put numbers in column format

1.75kg

1. Convert to grams firstly to make it easier to calculate
2. 2500-750 = 1750
3. Then convert back remembering 1000g = 1kg
4. 1.75kg

a) 1/15

1. Convert to the same denominator
2. So this would mean Tom 3/5 = 9/15 and Jerry 1/3 = 5/15
3. In total, 14/15ths has been eaten leaving 1/15

b) 250g

1. If Tom had 3/5 = 150g, then 1/5 = 50g
2. Therefore 5/5 = 250g

D C A B

A. 1/7

B. Very small / minimal chance

C. 1/6

D. 1/2

a) 8.52am

8.15am + 37mins = 8.52am

b) 5.46pm

6.23pm – 37mins.

Slightly harder to calculate so take off 23mins first to get to 6pm. This leaves 14mins (37-23). So then take 14mins off 6pm

So 5.46pm

a) £102

10metres would be £10.20 * 10 = £102

b) 2.5metres

£10.20 * 2 = £20.40. This leaves £5.10 (£25.50 – £20.40)

£5.10 is exactly half of £10.20. So therefore total is 2.5 metres

200miles

1. Calais to Paris is 320km. So 320 * 5/8 = number of miles
2. 200miles. Can be done in 1 of 2 ways. Per the above or work out 1/8th which would be 40km. Then 5 * 40km = 200m

600g

1. 2:1 Flour:Fat
2. 900g of pastry required. Given we have 3 parts, therefore each part is 300g
3. Flour is 2 parts so 2 * 300 = 600g

12:00pm

1. The way to look at this is the lowest common multiple of 3,5 & 8.
2. This is best done by doing your 8 times table and finding the first number that 3 & 5 also go into
3. This is 120. So equivalent is 120 minutes
4. Time is 12:00

a) 27

1. The cube is 3 deep and each face has 9 cubes. So total is 27

b) 8

1. 3 Blue faces will be on each corner
2. In total, there are 8 corners

c) 24

1. Each side has 4 faces. Its 6 sides * 4 = 24

d) 0

There are no faces with EXACTLY 2  other small cubes.

a) 160cm

b) 168cm²

49

1. Look for multiples of 7 between 20 and 80
2. So 21,28,35,42,49,56,63,70,77
3. 49 is the only one that will be a multiple of 5 next year

Area = 200cm²

1. If 2x long as wide, then need to calculate each side
2. Double length v width means length is 20cm and width is 10
3. Area = 200cm²

a) 4mins

Sally less Anna

b) 80mins

15 + 17+ 14+ 18+ 16

c) 16mins

80/5

d) 1km

Peter took 15mins. If its 4km/h he walks, then after 15mins, he walks 1km

a) 27

8 * 9 = 72. Clotted = 27

b) 6

To give 42, reverse would be 24. So 4 * 6 = 24

c) 5 & 7

Reverse would be 35. So 2 whole numbers would be 5 & 7