Primary 4 Singapore Maths (Grade 4): Topics, Textbook and Workbook
Primary 4 Singapore Maths (Grade 4) is for children aged 9 to 10. Students work with numbers to 100 000, factors and multiples, mixed numbers, decimals, angles, symmetry and nets, and read line graphs and pie charts. Explico's Singapore Maths supports every Primary 4 topic with a textbook, workbook, solution videos and AI assessment.
Last reviewed 24 September 2026 by the Explico Maths editorial team.
- Singapore: 2nd in the world for maths, PISA 2025
- Primary 1 to Primary 6, aligned to the MOE Singapore syllabus
- Written by MOE Singapore-trained Singapore teachers
- Print and eBook editions, taught in English
Primary 4 Maths Topics List (Grade 4)
Primary 4 students study the Singapore Primary 4 syllabus across three strands: Number and Algebra, Measurement and Geometry, and Statistics. Fractions, decimals and data: the foundations of upper primary.
Number and Algebra
- Numbers to 100 000; rounding to the nearest 10, 100 and 1000
- Factors and multiples
- Multiplication up to 3 digits by 2 digits; division by 1 digit
- Mixed numbers, improper fractions and fraction of a set
- Decimals to 3 places and the four operations
Measurement and Geometry
- Measuring angles in degrees
- Area and perimeter of composite figures
- Line symmetry
- Nets of prisms and pyramids
Statistics
- Tables and line graphs
- Pie charts
What changed in the updated syllabus: Under the updated syllabus, Pie Charts and Nets are now taught in Primary 4 instead of Primary 6. Explico's Singapore Maths follows this sequence.
Primary 4 Core Topics and Skills Compared
| Topic | Strand | What students learn | Common difficulty | How Explico helps |
|---|---|---|---|---|
| Whole numbers | Number and Algebra | Numbers to 100 000; rounding; number patterns | Rounding when the digit is 5 | Number-line models and levelled practice |
| Factors and multiples | Number and Algebra | Find factors, common factors, multiples and common multiples | Confusing factors with multiples | Arrays and a solution video per question |
| Fractions | Number and Algebra | Mixed numbers and improper fractions; fraction of a set; add and subtract | Finding a fraction of a set without unitary thinking | Bar models for fraction of a set |
| Decimals | Number and Algebra | Tenths to thousandths; compare, round; four operations | Thinking 0.45 is greater than 0.5 | Place-value charts, then AI practice |
| Angles | Measurement and Geometry | Name and measure angles in degrees | Reading the wrong scale on a protractor | Step-by-step protractor videos |
| Area and perimeter | Measurement and Geometry | Composite figures; unknown sides of rectangles | Missing hidden lengths in composite shapes | Worked examples in the textbook |
| Symmetry and nets | Measurement and Geometry | Lines of symmetry; nets of prisms and pyramids | Picturing how a net folds | Fold-and-build hands-on activities |
| Line graphs and pie charts | Statistics | Complete tables; read line graphs and pie charts | Reading pie chart sectors as exact values | AI assessment by learning objective |
Primary 4 or Grade 4? Schools outside Singapore often say Grade 4. The content is the same Singapore Primary 4 syllabus, for learners aged 9 to 10.
How Singapore Maths Teaches Primary 4: The CPA Approach and Bar Models
Singapore Maths builds understanding before speed, moving from objects to pictures to symbols so students know why a method works.
Concrete: learn by handling
Students handle counters, cubes and fraction pieces before meeting a rule.
Pictorial: see the problem with bar models
The bar model turns a word problem into a diagram, showing how quantities relate before calculating.
Abstract: move to numbers and symbols
Once the meaning is secure, students work confidently with numbers, symbols and written methods.
Problem-solving heuristics
Students follow a clear routine: understand, plan, solve, check, using heuristics like working backwards and spotting patterns.
There are 24 students in a class. 3/8 of them wear glasses. How many students do not wear glasses?
- Draw a bar of 8 equal units for all 24 students.
- 8 units = 24, so 1 unit = 24 ÷ 8 = 3.
- Students without glasses are 5 units: 5 × 3 = 15.
Answer: 15 students do not wear glasses.
Every workbook question has a worked solution video that explains the method in the same way.
The Complete Primary 4 Learning Suite
Every Primary 4 topic is supported by six connected parts: a textbook in print or eBook, a workbook, a worked solution video for every workbook question, AI assessment with gap analysis, a Teacher's Guide, and analytics for teachers and parents.
Built for Teachers and Schools
A classroom-ready Primary 4 programme with a teacher interface and school-level analytics, by class, topic and learning objective.
Teacher interface
Assign chapters, review auto-marked work, see who needs support.
School leader interface
Compare classes and cohorts, track syllabus coverage.
Flexible delivery, in English
Print, eBook or blended, all in English, for English-medium and international schools.
Getting Ready for Grade 5
Grade 5 is a big step: all four operations with fractions, percentage, rate, and area of triangles. A secure grasp of Grade 4 fractions and decimals is the best preparation.
- Converting mixed numbers and improper fractions
- Fraction of a set with bar models
- Decimal place value
Singapore's Primary 4 (Grade 4) pupils ranked 1st for maths among 58 countries in TIMSS 2023, and Singapore ranked 2nd in the world for maths in PISA 2025. See the full PISA and TIMSS results.
Choose the Right Start for Your Child or School
Help your child learn Grade 4 maths with confidence
- A free sample chapter from the Grade 4 textbook and workbook
- Worked video solutions, so homework never stalls
- Clear progress reports that show what to practise next
No payment details needed.
Bring the complete Grade 4 Singapore Maths programme to your school
- A demo account with the teacher and school leader views
- A walkthrough video you can share with your maths team
- Print, eBook or blended options for every grade
For principals, heads of maths and academic directors.
Primary 4 Singapore Maths (Grade 4): Frequently Asked Questions
Is Primary 4 Singapore Maths the same as Grade 4?
Yes. Schools outside Singapore often say Grade 4, while Singapore schools say Primary 4. Explico's Singapore Maths for Primary 4 follows the MOE Singapore Primary 4 Mathematics syllabus for children aged 9 to 10, so the content, sequence and teaching approach are the same.
What topics are covered in Primary 4 Singapore Maths (Grade 4)?
Primary 4 covers numbers to 100 000, rounding, factors and multiples, multiplication and division, mixed numbers and improper fractions, decimals to 3 places, angles in degrees, area and perimeter of composite figures, symmetry, nets, line graphs and pie charts.
What changed in Primary 4 Maths under the updated syllabus?
Pie Charts and Nets moved down to Primary 4 from Primary 6, and turns and 8-point compass directions were removed. Teaching pie charts earlier gives students more time to master data questions before the PSLE.
Can my child use Primary 4 Singapore Maths at home, in print or online?
Yes. The Primary 4 textbook and workbook come in print or as an eBook. Every workbook question has a worked solution video, so your child can check a method without waiting for a teacher. The AI assessment shows which topics need more practice, and you receive clear progress reports.