Rates and Speed
Ages 11–15Difficulty adapts to you
Rates and Speed
A rate compares quantities with different units, such as kilometres per hour or naira per kilogram. Unit rates describe the amount for one unit.
Your goals
- ✓You can compare quantities with different units.
- ✓You can use rate, unit rate correctly.
- ✓You can write both units and divide in the order asked.
Words to know
- rate:
- A comparison of two quantities measured in different units.
- unit rate:
- A rate written for one unit, such as kilometres per hour.
Examples
- 1180 km in 3 hours gives an average speed of 60 km/h.
- 2₦4,800 for 6 kg means ₦800 per kg.
Check these
- • Do not reverse the quantities and produce the reciprocal rate.
- • Keep every number, symbol, label, and unit in its correct place.
- • Show enough working to check how you reached your answer.
Helpful habits
- • Read the whole question before choosing what to do.
- • Show one clear step at a time and check each step.
- • If you are stuck, draw a model, try smaller numbers, or revisit the example.
Now try your own
Create your own rates and speed example, solve it, and explain how you checked it.
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