NotesMath · P5Rate
P5 Rate Quick Notes
Rate compares one quantity per one unit of another (e.g. $ per hour, litres per minute). P5 covers rate only — speed is P6-and-above territory, and PSLE 2027 removes speed entirely.
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1
Three Quantities
Rate = Total ÷ Number of units. Total = Rate × Number. Number = Total ÷ Rate.
2
Same Units
Match the units. If the rate is 'per hour', time must be in hours.
3
Rate is NOT Speed
P5 rate is about $/hour, litres/minute, pages/day. No distance-time speed at P5.
⚠️ Common Mistakes
Don't fall into these traps
- ✕Mixing minutes with 'per hour' rate
- ✕Confusing rate with ratio
- ✕Treating rate questions as speed questions
Teacher Hidayah's Tip
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Write the rate as a fraction with units: e.g. $12 / 1 hour. It removes confusion.
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Sample Question
Try it, then read the worked solution
Question
A tap fills a tank at 8 litres per minute. How much water in 15 minutes?
Worked Solution
- 1Total = Rate × Number
- 2= 8 × 15
- 3= 120 litres
Everything for Rate
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