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Meet ZaiSingapore Primary 1–6 · Ages 7–12Primary maths practice.
Primary maths practice.
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Practise MOE syllabus-aligned maths with past-year-paper-style questions. Upload a question for step-by-step guidance from Zai in tutor mode.
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Primary 4 - Area & Perimeter
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A rectangular garden is 12 m long and 8 m wide. What is its area?
ZaiI’m not sure where to start.
What does “area” tell us about the space inside a shape?
Try multiplying the length by the width. What is 12 × 8?
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Your question
24 stickers are shared equally among 6 children. How many stickers does each child receive?
ZaiHello! What would you like help with today?
There are 24 stickers and 6 equal groups. Which operation helps us share them equally?
Do you have any questions?
Completed work — Review1 question to revisitComing soon · Feature preview
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36 stickers are shared equally among 6 children. How many does each child receive?
36 ÷ 6 = 5
Not quite. The correct answer is 6.
Why your answer was marked wrong
6 × 5 = 30. We need a number that gives 36 when multiplied by 6.How to solve it
36 ÷ 6 = 6. Check: 6 × 6 = 36.
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Work through MOE syllabus-aligned primary maths questions. Ask for help at the moment the next step feels unclear.
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Past-year-paper-style maths questions
Practice questions informed by past-year papers from top schools, aligned to Singapore’s MOE Primary Mathematics syllabus.
Curated by former MOE teachers and educators
Former MOE teachers and educators curate the questions for syllabus alignment and primary-school learning.
Built around children aged 7–12
A supplement to lessons, with guidance that encourages children to try and explain their thinking.
FOR EDUCATORSSome ideas are
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Drawing aids for the classroom. Tools for preparing geometry, paper slicing and paper folding questions.
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Untitled diagram≡ Library
LAYERSLayer 1 3 shapesMove selected (0)Choose layer…
Problem 1pentagon · find xExport
Angles in triangle ABC add up to 180°.
x = 180° − 22° − 37° = 121°
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For Parents
What does Zai help my child do?
Zai is Zairoo’s chat companion. Children can upload a question for step-by-step guidance in tutor mode or get help beside a question during practice. Uploading completed work for marking is coming soon. Zai supports learning beyond maths, while Zairoo’s syllabus-aligned practice currently focuses on primary maths.
Which syllabus does the maths practice follow?
Zairoo’s Primary 1–6 maths practice is aligned to Singapore’s MOE Primary Mathematics syllabus. Practice questions are informed by past-year papers from top schools and curated by former MOE teachers and educators. Zai also supports children with questions they bring with step-by-step question guidance.
Can my child upload questions or completed work?
Your child can upload a question for step-by-step guidance in tutor mode. Uploading completed work for marking and mistake feedback is not available yet; it is coming soon.
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Educators can use drawing aids to explain ideas visually and prepare questions involving geometry, paper slicing and paper folding. Contact us to see the tools in a demo.
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