Algebra
Simplify 3x+5x
8x
What is 25% of 80
20
How many degrees are in a full turn
360
What is the area of a square with sides 5 cm
25cm2
Simplify the ratio 6:12
1:2
Solve: x+7 = 15
8
Calculate 3.6 x 5
18
What is the sum of angles in a triangle
180°
48cm2
Divide 40 in the ratio 3:5
15:25
Expand: 4(x+3)
4x+12
What is 3/4 as a percentage
75%
A triangle has angles 50° and 60°. Find the the third angle
70°
Find the area of a triangle with base 14cm and height 9cm
63cm2
If 4 pens cost $12, how much do 7 pens cost
$21
3x - 5 = 16
x = 7
What is the HCF of 36 and 48
12
What is the angle of one side of a rectangle
90°
Find the area of a trapezium wth parallel sides 4cm and 8 cm long, respectively, and height 16 cm
96cm2
A map scale is 1:50,000. What real distance does 4 cm represent?
2 km
factorise x2 +7x + 12
(x+3)(x+4)
Calculate 2/5 + 3/6
9/10
What is the sum of interior angles of a hexagon
720°
Find the area of a circle with radius 14cm
Hint: Use π as 22/7
44cm2
5 workers complete a job in 12 days. At the same rate, how many days would 10 workers take?
6 days