International packages delivery time may take longer than usual. Thank you.

Singapore Asia Publishers books will be sent after 2 October 2020 due to warehouse stock-take. Thank you.

10% Off Books from Major Publishers for Local Delivery! (Min $20)

We ship internationally!

Prices in Singapore Dollars

2019 PSLE Past Year Papers released. See here.

See our Promotions

P5. 51 Must Know Problem Sums (Volume 1 out of 3)


Here are 51 Must-know problem sums types for your P5 child. Does your child know all of these before sitting for his next exam? Help him to master all 51 of them now.

Here is our new volume for – “51 Must-Know Problem Sums (Vol 1)."

This can help your child to spot problem sums. Would you want to know what problem sums will appear in your child’s exam so you can prepare FIRST and be Ready for them by then?

Why do we create this?

To help our students have a competitive advantage over others, this book is specially designed for them.

Our math team has worked really very hard going through more top school papers and guess what we discovered.

We discovered THIS!

We discovered a pattern.

Yes! A pattern! (that 8 out of 10 students and parents don’t know at all)

There’s a pattern which most students won’t know.

In fact, there are 51 kinds of problem sums tested in the entire year of P5.

The good thing is we have recorded this group of 51 must-know problem sums in this book.

Yes! 51 problem sums in one book. We want to make it really easy for your child to revise from a single source and eventually get the marks he deserves!

Here are the 15 Types of Problem Sums with more Advanced Problem Sums (your child should know all these by P5)

2 Ifs
Area (Unitary)
Equal Fraction
First Common Multiple
Guess & Check
More Than
Repeated Identity
Same One
Working Backwards

No. of Pages -
Author John Yeo
No. of Issues -
Brand Learning Out Of The Box

All books sold are non-refundable under any circumstances.