Year 8 Jeopardy Whitelaw

Numbers & Exponents

100

What is 1,0000⁰

1

200

Simplify: x³*x⁵

x⁸

300

What is the highest common factor between 45 and 20?

5

400

What is the lowest common multiple of 6 and 7?

42

500

Simplify: (2y⁴)³

8y¹²

Algebra

100

Solve for x:

3x+1=13

x=4

200

Simplify: 

3(a+c)-c

3a+2c

300

Factorise:

2a²+10a

2a(a+5)

400

Solve for x:

3x-1=5x+4

-2.5 or -5/2

500

Simplify:

3(x+1)-2(x+3)

x-3

Probability/Percents

100

12 student in a class wear glasses in a class of 20. What percent of students do not wear glasses?

40%

200

When rolling a fair, six-sided die, what is the probability of rolling a number less than 3?

2/6 or 1/3

300

When rolling a fair, six-sided die, what is the probability of rolling a prime number?

4/6 or 2/3

400

A shop has a 15% off sale. The original cost of a shirt is $32. What is the new cost of the shirt?

$27.20

500

A pair of shoes used to cost $210 and now they cost $150. What percent change is this?

40% decrease

Angles

100

All the angles in a triangle should add up to what degrees?

180 degrees

200

Two angles in a triangle are 30 degrees. Find the third angle.

120 degrees.

300

What is the sum of interior angles of a quadrilateral? 

360 degrees

400

When a transversal crosses two parallel lines, corresponding angles are always...

congruent

500

Find the measure of an interior angle in a regular hexagon.

120 degrees

Geometry

100

A rectangle has an area of 15 cm² The width of the rectangle is 5cm. Find the length.

3 cm

200

A circle with radius 12 cm has what area? Leave your answer in terms of pi.

144pi cm²

300

A triangle has sides of 2n-3, 3n+1, and 5n. Find an expression for the perimeter.

10n-2

400

A pizza has a radius of 7 inches. A slice is cut with an angle of 40 degrees. Find the area of the slice. Round your answer to the nearest tenth.

17.1 in²

500

Find the perimeter of a sector which has a radius of 10cm and angle of 32 degrees. Round to the nearest hundredth.

25.59 cm