Everyday problems: the 11 Plus question types

Fence posts and gaps, letters passed on in rounds, people meeting on a road, gear wheels, clock angles and rules with a part for each one.

About 60 seconds a question in the testTry five with worked answers

Every question here is written by Prism in the style of the tests. None is copied from a real paper, and a fresh one is drawn each time a child practises.

From foundation to exam standard

Two questions at each level. Tap an option to check it.

Foundation where a child in Year 3 or 4 starts

Question 1Aim for about 60 seconds

Gear A has 24 teeth and turns gear B, which has 16 teeth. When gear A turns 4 times, how many times does gear B turn?

A24 teethB16 teeth
Show the worked answer

Answer: A, 6

How to work it out

  1. 4 turns of A pass 4 × 24 = 96 teeth.
  2. Gear B has 16 teeth, so it turns 96 ÷ 16 = 6 times.

Why the other options are wrong

  • B (5): If it turned 5 times, 80 teeth would pass, but 96 teeth pass.
  • C (4): Gears only turn the same number of times when they have the same number of teeth.
  • D (7): If it turned 7 times, 112 teeth would pass, but 96 teeth pass.
  • E (96): This is the number of teeth that pass; divide by B's 16 teeth to count B's turns.
Question 2Aim for about 60 seconds

Gear A has 24 teeth and turns gear B, which has 40 teeth. When gear A turns 10 times, how many times does gear B turn?

A24 teethB40 teeth
Show the worked answer

Answer: D, 6

How to work it out

  1. 10 turns of A pass 10 × 24 = 240 teeth.
  2. Gear B has 40 teeth, so it turns 240 ÷ 40 = 6 times.

Why the other options are wrong

  • A (10): Gears only turn the same number of times when they have the same number of teeth.
  • B (7): If it turned 7 times, 280 teeth would pass, but 240 teeth pass.
  • C (240): This is the number of teeth that pass; divide by B's 40 teeth to count B's turns.
  • E (5): If it turned 5 times, 200 teeth would pass, but 240 teeth pass.

Standard the 11 Plus standard, Year 5

Question 3Aim for about 60 seconds

What is the smaller angle between the hands of a clock at 8 o'clock?

123456789101112
Show the worked answer

Answer: C, 120°

How to work it out

  1. The hands are 4 numbers apart.
  2. Each number is 360° ÷ 12 = 30°, so the angle is 4 × 30° = 120°.

Why the other options are wrong

  • A (150°): This counts one number too many; the hands are 4 numbers apart.
  • B (240°): This is the larger angle, the long way round; the question asks for the smaller one.
  • D (20°): This counts the minute marks between the hands as degrees; each number is 30°, not 5°.
  • E (24°): This uses 6° for each number; 6° is one minute mark. Each number is 30°.
Question 4Aim for about 60 seconds

Tariq and Dev live 138 km apart. They set off at the same time towards each other, Tariq at 16 km/h and Dev at 30 km/h. How far from Tariq's home do they meet?

Show the worked answer

Answer: A, 48 km

How to work it out

  1. Together they close the gap by 16 + 30 = 46 km every hour, so they meet after 138 ÷ 46 = 3 hours.
  2. In that time Tariq has gone 16 × 3 = 48 km.

Why the other options are wrong

  • B (90 km): This is how far Dev has gone, so it is the distance from Dev's home.
  • C (64 km): This is how far Tariq goes in 4 hours; they meet after 3 hours.
  • D (69 km): This is halfway; they only meet halfway if they go at the same speed, and Dev is faster.
  • E (122 km): This takes one hour of Tariq's walking from the whole distance.

Exam standard what the papers ask in Year 6

Question 5Aim for about 60 seconds

Grace and Layla live 51 km apart. They set off at the same time towards each other, Grace at 12 km/h and Layla at 22 km/h. They set off at 10:30. At what time do they meet?

Show the worked answer

Answer: A, 12:00

How to work it out

  1. Together they close the gap by 12 + 22 = 34 km every hour, so they meet after 51 ÷ 34 = 1.5 hours, which is 1 hour 30 minutes.
  2. 10:30 + 1 hour 30 minutes = 12:00.

Why the other options are wrong

  • B (13:30): This is twice as long as it takes: together they close the gap at the two speeds added.
  • C (13:00): This is an hour too late.
  • D (12:20): This reads 1.5 hours as 1 hour 50 minutes; half an hour is 30 minutes.
  • E (11:15): This is only half the time; check: by then they have covered 25.5 km of the 51 km.
Question 6Aim for about 60 seconds

Fence posts are put along both sides of a straight fence 90 m long, every 6 m, with one at each end of each side. How many fence posts are there altogether?

Show the worked answer

Answer: D, 32

How to work it out

  1. One side has 90 ÷ 6 = 15 gaps, so 16 fence posts.
  2. Both sides: 2 × 16 = 32.

Why the other options are wrong

  • A (34): This adds two extra fence posts to each side; each side has just one more post than gaps.
  • B (30): This counts the gaps on each side; each side has one more post than gaps.
  • C (16): This is one side only; there are fence posts on both sides.
  • E (31): This adds the extra post once; each side needs its own extra post.

More maths

All maths question types · Every subject

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