9 MATHS YEAR REVIEW

Algebra

100

Solve the following: 2x=14

x=7

200

Solve the following: 24/x=8

x=3

300

3(x+2)=36

x=10

400

factorize:

3x2-11x-4

(3x+1)(x-4)

500

Solve the following: (2+x)(3+2)=50

x=8

rates and area

100

What is the rule for the area of a rectangle?

Area = length x width

200

What is the rule of the area of a 4cm square.

16cm^2

300

How many cm in 1.2m?

120cm

400

a car travels at 40km/hour for 18 hours, it uses two gallons of fuel every 30 minutes. How many gallons of fuel did it use?

2880 gallons

500

John drove for 3 hours at 110km/h and for 1 hour at 60km/h. How far did John drive?

390km

Indices and Pythagoras theorem

100

in triangle abc if ab =3 and bc=12, find the length of ac..

13

200

what is the square root of 225?

15

300

what is the square root of 361?

19

400

In Triangle xyz if xy=4cm and xz=6cm what is the area of triangle xyz?(to the nearest hundredth)

8.94cm

500

A right triangle abc with side ab as 4.2 cm and side bc is 3.23 cm. What is the perimeter, rounded to the third significant figure?

12.7cm

Ratio & Scale

100

Simplify 3:18

1:6

200

Write the following in scientific notation: 345 000 000

3.45 x 10^8

300

Solve the following: x:12 = 4:16

x=3

400

Simplify the following: 1.2:0.26

6:13

500

solve: 

20y2:4y

5y:1

BONUS

100

How many sides does a hexagon have?

6

200

What is 10% of 120?

12

300

Calculate the mean for this data set: 4, 5, 7, 9, 10

mean = 7

400

What is the gradient of this linear equation? y=3x + 4

gradient = 3

500

Clare has 20 chocolates to share evenly between herself and 4 friends. How many chocolates will each person get?

4 chocolates