Introduction to Algebra (Cambridge (CIE) IGCSE International Maths: Core): Exam Questions

Calculate the value ofwhen = 3 and c = 6.

Find the value of when a = 4 and b = 5.

=.....................................

Kyra has a faulty thermometer.
It always shows the temperature as 2°C higher than the actual temperature.
The temperature on the thermometer is °C.

Write an expression, in terms of , for the actual temperature.

............................................ °C 

Calculate the value of  when and .

Simplify.

The cost to manufacture a product is given by the formula:

where is the cost in pounds, is the material cost in pounds per unit, and is the time in hours.

Calculate the cost to manufacture the product when the material cost is GBP8.40 per unit and the time is 3 hours.

A pen costs 60 cents and a ruler costs 29 cents.
Write down an expression for the total cost, in cents, of pens and rulers.

........................................ cents

Work out the value of when = 38.64, = 5.5 and = 3.7

= ................................................. 

i) Find the value of when = 8 and = −3.

[2]

ii) Make the subject of the formula .

= ................................................... [2]

Simplify.

Work out the value of a when = 35 and = 5.

= ................................................... 

Find an expression for the perimeter of this triangle.
Give your answer in its simplest form.