Year 8 Jeopardy

Factors and Powers

100

Write down one factor of 5

1 or 5

200

Write down highest common factor of 15 and 18

3

300

Write down 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 in index notation (using power)

10⁸

400

Round 5.65340596 to 4 significant figure

5.6534

500

Simplify fully: (4² x 4⁷)/(4³)³

1

Working with powers

100

Simplify fully: 4a x 3a 

12a²

200

Simplify fully: 4a x 5b x 2a

40a²b

300

Simplify fully: 3a x 4a + 2a x (-3)a

6a²

400

Find m²-4m+2 if m=-3

23

500

Expand and simplify

4a(2a-4b)+3a²

11a²-16ab

Working with powers 2

100

Simplify: 4a + 5a - 6a

3a

200

Solve: 4x = 12

x=3

300

Solve: 3y -2 = 7

y=3

400

Solve: 4a+5a -4 = 3

7/9 or 0.777777....

500

Simplify:

3a⁴ x 2a³ x (-2b²)³

-48a⁷b⁶

2D shapes and 3D solids

100

What is the area of a triangle with base 5cm and height 10 cm

25 cm²

200

What is the volume of a cube with length 2cm?

8 cm³

300

What is the formula for finding circumference of a circle

2 x pi x r

400

Find the missing length of a right angled triangle

10, 12, Hyp: ??

15.6

500

What is a surface area of a cylinder, if the height is 10cm, and radius of the circle base is 5

150 pi cm²

471 cm²

Transformations

100

4 transformations you learned are...

Translation, Rotation, Reflection, Enlargement

200

What is (x, y) called?

Column vector

300

What do you need to mention when you are describing rotation?

Centre, angle, direction

400

Show image S3q8

What transformation is this? Write as fully as possible

Enlarge centre (-1,1) scale factor 2

500

This is a 2D shape. If we enlarge this object by scale factor of 5, the area is 100. What is the area original shape?

4