Algebraic Reasoning (Edexcel GCSE Maths: Foundation)

Write down an example to show that each of the following two statements is not correct.

The multiples of an odd number are always odd.

 All the digits in even numbers are even.

The th even number is .

Write down an expression for the next even number.

and  are two consecutive odd numbers.

Give an example to show that the value of  is a multiple of 

is a positive number.

is a negative number.

For each statement, tick the correct box.

Which of these is a correct identity?

Circle your answer.

The diagram shows a cube with edges of length  cm and cone of radius  cm and height  cm.

The volume of the cube is equal to the volume of the cone.

Show that , where  is an integer.

The ^th odd number is .

The next odd number after is .

Explain why.

Write down an expression, in terms of , for the next odd number.

Here is a right-angled triangle.

Four of these triangles are joined to enclose the square  as shown below.

Show that the area of square  is .

and  are two even numbers.

Give an example to show that the value of  is a multiple of 

Show that when  and  are both even numbers, the value of  will always be a multiple of 6

Here is a rectangular wooden block.

The measurements of the diagram are in centimetres.

Three of these wooden box are put together to construct a shelf.

The perimeter of the shelf is  cm.

Show that 

Consider the statement,

'When  and  are whole numbers,  is always a multiple of ."

Is this statement correct?
You must give a reason for your answer.