Challenging Problem Sums Exercises

Must-Practise Problem Sum Questions

Mastering Singapore Maths Problem Sums

For primary school pupils with high ability in Mathematics, practising more challenging problem sums with detailed solutions will help them score better grades.

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KooBits presents specially designed challenging problem sum questions for any children with high ability in maths to practise. You may also read our popular articles about problem sums to get views from our Problem Sum experts.

 

How It Works

  • 1
  • Purchase
    and download
  • 2
  • Print
    on demand
  • 3
  • Practise
    at anytime
 

Why Choose Us

Top 10 Reasons Your Child Should Practise Our Questions

  1. All questions are based on latest primary mathematics syllabus from Singapore MOE.
  2. All question are set in consultation with former MOE teachers from top schools.
  3. 35 key types of commonly encountered questions to expose your child to commonly-tested problem sums, including non-routine problem sums.
  4. All questions are arranged in according to topics and skills to allow your child to polish and sharpen problem solving skills during revisions.
  5. Gaining familiarity in mathematical problem-solving, your child will develop confidence and competence in preparation for all school exams, and eventually PSLE.
  6. All questions are high level to challenge your child’s understanding in mathematics.
     
  7. These questions will complement all other mathematics guide books and be essential in honing your child’s critical thinking and problem solving skills.
  8. Full worked solutions and model methods provided to facilitate self-learning for your child.
     
  9. Reprint all questions as many times as you want for your child’s more practices.
  10. Rigorous practice to aid in mastery of mathematical concepts for your child.
 

What You Get

  • Each volume includes 35 challenging problem sum questions for a topic.
  • Answer keys to all challenging problem sums are included.
  • Step-by-step solutions are included exclusively.
  • * All volumes are in Adobe PDF format. You may need Adobe Reader to view.
 

Pricing – For Personal Licence

  • Problem Sums
    Primary 4:
    Four Operations of Whole Numbers


    35 Questions + Answer
    Keys + Solutions in PDF
    $5.99
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  • Problem Sums
    Primary 4:
    Fractions


    35 Questions + Answer
    Keys + Solutions in PDF
    $5.99
    BUY NOW
  • Problem Sums
    Primary 4:
    Time


    35 Questions + Answer
    Keys + Solutions in PDF
    $5.99
    BUY NOW
  • Problem Sums
    Primary 4:
    Four Operations of Decimals


    35 Questions + Answer
    Keys + Solutions in PDF
    $5.99
    BUY NOW
  • Problem Sums
    Primary 4:
    Geometry & Area and Perimeter


    35 Questions + Answer
    Keys + Solutions in PDF
    $5.99
    BUY NOW
  • Best Deal   Problem Sums – Primary 4: All Subjects   $29.95 $19.00   You Save 37%!   BUY NOW
* All prices are in Singapore Dollars.
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