# Tag Archives: o level math tuition

## Free Exam Paper: CHIJ Katong Convent Sec 3 Express Additional Mathematics

Katong Convent Exam Paper (Sec 3 A Maths, with answers)

## Ten Year Series: How many questions or papers to practice for Maths O Levels / A Levels?

This is a question to ponder about, how many questions or papers to practice for Maths O Levels / A Levels for the Ten Year Series? If you searched Google, you will find that there is no definitive answer of … Continue reading

## Exam Time Management and Speed in Maths (Primary, O Level, A Level)

Time management is a common problem for Maths, along with careless mistakes. For Exam Time management, here are some useful tips: 1) If stuck at a question for some time, it is better to skip it and go back to … Continue reading

## Challenging Geometry E Maths Question — St Andrew’s Sec 3 Maths Tuition Question

Question: ABCD is a rectangle. M and N are points on AB and DC respectively. MC and BN meet at X. M is the midpoint of AB. (a) Prove that and are similar. (b) Given that area of : area … Continue reading

## O Level Logarithm Question (Challenging)

Question: Given , find the value of  . Solution: Working with logarithm is tricky, we try to transform the question to an exponential question. Let Then, we have . Here comes the critical observation: Observe that . Divide throughout by … Continue reading

## Hwa Chong IP Sec 2 Maths Question – Equation of Parabola

Question: Given that a parabola intersects the x-axis at x=-4 and x=2, and intersects the y-axis at y=-16, find the equation of the parabola. Solution: Sketch of graph: Now, there is a fast and slow method to this question. The … Continue reading

## Sec 2 IP (HCI) Revision 1: Expansion and Factorisation

This is a nice worksheet on Expansion and Factorisation by Hwa Chong Institution (HCI). There are no solutions, but if you have any questions you are welcome to ask me, by leaving a comment, or by email. Hope you enjoy … Continue reading

## Why is e^(ln x)=x? (O Level Math/ A Level Math Tuition)

Why is ? This formula will be useful for some questions in O Level Additional Maths, or A Level H2 Maths. There are two ways to show or prove this, first we can let Taking natural logarithm (ln) on both sides, … Continue reading

So,

## The mass of particles of a certain radioactive chemical element (O Level Math Tuition Question)

Question from http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=29&t=8315&start=780 The mass of particles of a certain radioactive chemical element is halved every 10 months.  During a chemical experiment, the initial mass of particles of the chemical element is 3mg. (i) write down an expression, in terms … Continue reading