Year 9 Revision Quiz

Scientific Notation

100

Why do we use scientific notation

Make big and small numbers easier to work with

200

Write this number in Scientific notation:

3600

3.6x10³

300

Write this number in standard notation:

4.51x10^-4

0.000451

400

Calculate:

3 x 4.38x10⁴/2.8x10^-4

469285714.3

or approx 4.6x10⁹

500

Chey has the number 3.2x10⁴ and Issy has the number 4500. Chey says her number is over 10 times larger.

How many times larger is Cheys number?

7.1 times bigger

Pythagoras

100

What type of triangle can you use Pythagoras with?

Right angled

200

What is Pythagoras' theorum?

c²=a²+b²

Where c is the length of the hypotenuse

300

A right angled triangle has a short length of 3m and 4m. What is the length of the hypotenuse?

5m

400

A right angled triangle has a short length of 6m and 8m. What is the length of the hypotenuse?

10m

500

A right angled triangle has a hypotenuse of 7.21m and another side of 6m. What is the length of the remaining side?

4m

Simple Interest

100

What does each letter in the rules  A=P+I and I+Pin mean?

A=total amount

I=Interest earned

P=Principal amount

i=interest rate

n=years

200

Hayley gets a loan for $200 over three years at 4.5%. How much interest is she charged?

$27

300

Maddox lends Elia $800 and lets him pay it back over a year at 5% interest. How much will he pay back at the end of the year?

$840

400

Shanayd invests $500 for 4 years and earns $120 in interest. What was her interest rate?

6%

500

Riva borrowed $3000 and ended up paying back $3600. If she was charged 5% interest, how long was the loan active for?

4 years

Length of a line

100

What is the rule for length of a line when given the coordinates of the endpoints

square root of (x₂-x₁)²+(y₂-y₁)²

200

What is the distance between (3,4) and (0, 0)

5

300

What is the distance between (5,6) and (2, 8)

3.61

400

What is the distance between (-5,8) and (3, -4)

14.42

500

What is the distance between (-3,-5) and (-4, -10)

5.1

Trivia

100

What country are oranges from

China

200

What year did Homer Simpson first appear on TV?

1987

300

What is the highest grossing (earning) movie of all time?

Avatar

400

Out of the 39 State of origin series played so far how many has QLD won?

22 wins, 2 draws, 15 losses

500

What is the technical name of the hashtag symbol

octothorpe