NotesMath · P4 to P6Problem Sums
Problem Sums Rescue Notes
Most students lose marks by rushing. Follow the 5-step rescue plan for every problem sum.
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Step 1 — Read Twice
Read the question twice. Circle the numbers. Underline what is asked.
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Step 2 — Plan
Ask: is this ratio, fraction, percentage, or model?
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Step 3 — Draw the Model
One bar per group. Label units clearly.
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Step 4 — Solve
Do the arithmetic. Write units after every number.
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Step 5 — Check
Re-read the question. Did you answer what was asked?
⚠️ Common Mistakes
Don't fall into these traps
- ✕Skipping the model drawing
- ✕Answering the wrong quantity
- ✕Forgetting units in the final answer
Teacher Hidayah's Tip
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If you're stuck for 2 minutes, redraw the model instead of staring at numbers.
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Sample Question
Try it, then read the worked solution
Question
Ali had $80. He spent 1/4 on food and 3/8 on a book. How much money is left?
Worked Solution
- 1Food = 1/4 × 80 = $20
- 2Book = 3/8 × 80 = $30
- 3Left = 80 − 20 − 30 = $30
Everything for Problem Sums
Each topic in the library comes with the full 5-piece bundle.
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Before-Class Prep
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After-Class Practice
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Downloadable Notes
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One-Page Mind Map
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Mistake Fix Zone