### A Maths

At Penciltutor’s A-Maths tuition classes we remind our students to look out for hints in the question paper. If a question asks for a sketch, then plotting the graph on a graph paper is not necessary and by rationalising a surd-containing denominator, the final answer must always have a denominator that does not contain any surds. Other reminders that we give our students is to avoid making assumptions. An angle that ‘looks like a right angle’ is not necessarily a right angle and a + b/2 is not the same as (a + b)/2. Showing as much working as possible is always advisable as marks are not deducted for wrong working and brackets such as { } or ( ) have different meanings in mathematics. Precious marks are often lost when students fail to convert an equation such as y = ax^n into log y = nlog x + log a before plotting a curve and students who differentiate a quotient very often get mixed up with the terms on the top or bottom of the fraction. Other errors due to carelessness include substituting the bottom limit first into a definite integral expression and the failure to include the arbitrary constant c when solving indefinite integrals.

The suggested answers to the GCE O level Additional Mathematics (A Maths/ Add Maths) papers will be posted below. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

A Maths 4038 Paper 2

A Maths 4047 Paper 2 (Part 1)

A Maths 4047 Paper 2 (Part 2)

A Maths 4047 Paper 2 (Part 3)

A Maths 4047 Paper 1 (Part 1)

A Maths 4047 Paper 1 (Part 2)

A Maths 4047 Paper 1 (Part 3)

A Maths 4047 Paper 2

A Maths 4047 Paper 1

A Maths 4047 Paper 2

A Maths 4047 Paper 1

A Maths 4047 Paper 1 Q1 to 3

A Maths 4047 Paper 1 Q4 to 8

A Maths 4047 Paper 1 Q9 to 11

A Maths 4047 Paper 1 Q12

A Maths 4047 Paper 2 Q1 to 3

A Maths 4047 Paper 2 Q4 to 5

A Maths 4047 Paper 2 Q5 to 7

A Maths 4047 Paper 2 Q7 to 8

A Maths 4047 Paper 2 Q8 to 9

A Maths 4047 Paper 2 Q10 to 11 