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Exam practice — week 42 · maths, lit, cs — GCSE Mathematics section

2026-10-14 · check · 1 paper · 9/18 · 50% · not grade-converted

Exam Skills test #9, typed on the portal, sat 30 min for the whole paper.

exam-skills #9 9/18

sat 2026-10-14 · 0 left blank

QTopicMarksQuestionAnswer givenNote
1R1-R30/1A map has a scale of 1 cm to 4 km Two villages are 6.5 cm apart on the map. Write down the real distance between the two villages. [1 mark] Answer ______ km44km Working: 6.5*4=24+20=44B0. Answer 44. Working 6.5*4 = 24+20 = 44: method right (×4) but 0.5×4 written as 20 — place-value slip, unchecked with 15 min unused. loss=technique.
2N141/1Circle the best estimate for the value of 78.6 ÷ 0.39 20 32 200 320 [1 mark]200 Working: 79/0.4=197.5B1 200 chosen. Working 79/0.4 = 197.5 — rounded sensibly and picked the estimate. 3 min on a 1-min question.
3N1-N31/2Work out 6 + 4 × 3^2 − 10 ÷ 2 [2 marks] Answer ______25 Working: 3*3=6,4*6=24,10/2=5,24+6=30,30-5=25M1 for 10÷2=5 seen; A0 (25). Order of operations correct throughout but 3^2 evaluated as 6 (3×3 written as 6 — squaring treated as doubling). loss=knowledge (misconception on squares).
4N11-N121/2A jacket costs £60 The price is increased by 15% Work out the new price of the jacket. [2 marks] Answer £ ______9 Working: 60/10=6=10%,6/2=3=5%,6+3=9M1 6 and 3 seen (10% and 5%); A0 answer 9 = the increase only, not the new price. 4 min on a 2-min question. loss=technique (command 'new price' not read back; N11-N12 flagged in maths next_steps already).
5A221/3Solve 4(x − 1) < x + 11 You must show your working. [3 marks] Answer ______x<4 Working: 4x-1<x+11,3x-1<11,3x<12,x<4M0 bracket: 4(x−1) expanded as 4x−1 (only the first term multiplied). M1 terms then collected correctly from her line (3x<12). A0 x<4. Working shown, 1 min. loss=knowledge (expanding a bracket: multiply every term).
6R7-R80/4A bag contains red counters and blue counters in the ratio 2 : 5 12 more red counters are added to the bag. The ratio of red to blue counters is now 4 : 5 Work out the number of blue counters in the bag. [4 marks] Answer ______for every 4 red there are 5 blue0. Wrote 'for every 4 red there are 5 blue' in 1 min — a restatement of the final ratio, no method, no parts. Not a non-attempt but a first line only; not returned to with 15 min unused. loss=knowledge (changing ratio: no method to start).
7G14-G163/3A rectangle measures 10 cm by 8 cm. A smaller rectangle measuring 4 cm by 3 cm is cut from one corner, leaving an L-shape. Work out the area of the L-shape. You must show your working. [3 marks] Answer ______ cm^268cm*2 Working: 10*8=80,4*3=12,80-12=68M1 M1 A1. 10×8=80, 4×3=12, 80−12=68, working shown, 1 min. Units written as cm*2.
8N42/2A = 2^3 × 3 × 5^2 B = 2^2 × 3^2 × 5 Work out the highest common factor (HCF) of A and B. [2 marks] Answer ______the HCF of A and B is 60 Working: 2*2*2=8,5*5=25,8*3*25=600,2*2=4,3*3=9,4*5*9=180, 90,2,20,9,1,180,60,3,30,6,18,10 60,10,30,20,6,100B2 60. Method: evaluated A=600 and B=180 then listed factors to find the HCF — long way round (5 min on a 2-min guide) but correct. Did not use the prime factor form given. loss=none; technique note for later (use the index form).

Marks by topic

Ordered by marks lost. These are the candidates for reteaching.

TopicNameMarksLost
R7-R8Ratio, fractions and linear functions0/44
A22Inequalities1/32
N1-N3Place value, four operations, negatives, order of operations1/21
N11-N12Fractions of amounts, percentages as operators1/21
R1-R3Scale and unit conversion0/11
G14-G16Perimeter and area3/30
N14Estimation and rounding1/10
N4Factors, multiples, primes, HCF/LCM, prime factorisation2/20