Summer Half-Term Jeopardy

Number

100

Round 2864 to 2 significant figures

2900

200

Estimate:

18.5 x 324.6

6000

300

Order from smallest to largest:

0.3,  1/4,  0.34,  1/3,  32%

1/4,  0.3,  32%,  1/3,  0.34

400

Write 0.000317 in standard form

3.17 x 10^-4

500

Find the next two terms of this Fibonacci-style sequence:

a   b   a+b

a+2b   2a+3b

Algebra

100

Expand:

2x(3x + 5)

6x² + 10x

200

Simplify:

x² + x² + x²

3x²

300

Solve:

2x + 5 = 4x - 7

x = 6

400

What is the equation of the line with gradient 3, which passes through the point (0, -4)

y = 3x - 4

500

Simplify:

(2x²)³

8x⁶

Shape

100

What is the area of a triangle with base 12cm and height 3cm?

18cm²

200

What is the volume of a cuboid with side length 3cm, 4cm and 5cm?

60cm³

300

Describe how to find the area of a circle with diameter 6cm

6 / 2 = 3

3² x pi

400

Describe the difference between a parallelogram and a rhombus

Rhombus has all equal sides, parallelogram has two pairs

500

What is the surface area of a cube with side length 5cm?

150cm³

Ratio

100

Anne and Bob share £280 in the ratio 2:5. How much does Bob get?

£200

200

What is 45% of 300?

135

300

Increase 240 by 20%

288

400

A shirt is in a 60% off sale, and now costs £36. What was the original price?

£90

500

y is directly proportional to x².

y = 20 when x = 2.

What is the value of y when x = 3?

45

Wildcard

100

Ed thinks of a number. He multiplies it by 6 and then subtracts 7. His answer is 59. What was his number?

11

200

Find the nth term of this sequence:

14, 11, 8, 5, ...

-3n + 17

300

What is the formula for percentage change?

change/original x 100

400

What is the probability of rolling two dice, and getting a 6 on both?

1/36

500

Factorise:

12x²y³ + 16x³y

4x²y(3y² + 4x)