Maths Jeopardy

Percentages

100

Find 12.5% of 80

10

200

One day, 132 trains arrive at a railway station and 99 of them are late. What percentage of trains are on time?

28.8%

300

Find the compound interest earned on £2300 invested for 2 years at 7% per annum.

£2633.27

400

A laptop costs £420 with 20% included. How much is the laptop excluding tax?

350

500

How much interest do I gain from simple interest if I invest £500 at an interest rate of 2% for 7 years.

£70

Angles in Polygons

100

How do I find the total interior angles in a polygon?

180(n-2)

200

What do exterior and interior angles add up too?

180 degrees

300

What is the size of the exterior angle of a 6 sided regular polygon?

60

400

If an exterior angle of a regular polygon is 30 degrees, how many sides does it have?

12

500

If an interior angle of a regular polygon is 144 degrees, how many sides does the shape have?

10

Expanding and Factorising

100

Expand 

3x(x+2)

3x^2 +6x

200

Expand and simplify 5(𝑥 + 5) − 2(𝑥 + 3) 

3x+19

300

Expand and simplify (𝑥 + 4)(𝑥 − 2) 

x^2 + 2x -8

400

Factorise 4𝑥 − 12 

4(x-3)

500

Factorise 36𝑎𝑏𝑐 − 24𝑏𝑐𝑑

6bc(6a-4d)

Fractions

100

What is  3/7 +3/4 

936

200

7/20 + 2/5 + 1/10

 

27/20 or 1 7/20

300

What fraction 20 equals 8?

2/5

400

1 /3 ÷ 2/5

5/6

500

As a mixed number, calculate: 

7/9 × 1/2 ÷ 2/11

2 5/36

Standard Form

100

Write 3000 in standard form

3x10³

200

Write 0.00003 in standard form

3 x 10 ^-5

300

Write 0.00312 in standard form

3.12x10^-3

400

56500000

565x10⁷

500

Write 0.000 000 000 000 000 000 000 1 in standard form

1x10²²

General knowledge

100

Who is the head of maths at Blatch?

Mr Colwill

200

how many students are in year 8?

334

300

What is 43, 782 rounded to the nearest 10,000

40, 000

400

Who is Miss K's arch nemesis?

Bobert Rurrows

500

What football team do 3 female members of the maths department support?

Arsenal

Your Maths teacher

100

What is your maths teachers background?

Ireland

Scotland

Canada

Bulgarian

Canada

200

What was your Maths teacher's favourite subject when he went to school?

English

Geography

Maths

PE

Sciences

Technology

Science

300

What tattoo does Miss K have on her left leg?

Whale Shark

400

What year did Miss K start at Blatch?

2021

500

What's Miss K's favourite film?

Lord of the Rings: The Two Towers