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Units and Dimensions ( Adult Numeracy Level 2)

Units and Dimensions ( Adult Numeracy Level 2). Using units and Dimensions to help solve calculations. Quantity = Number  [Units] Examples: Distance  4 [miles] Speed  14 [miles/hour] Area  27 [m 2 ] Price of Electric  10.55 [pence/kWh].

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Units and Dimensions ( Adult Numeracy Level 2)

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  1. Units and Dimensions(Adult Numeracy Level 2) Using units and Dimensions to help solve calculations

  2. Quantity = Number  [Units] Examples: Distance  4 [miles] Speed  14 [miles/hour] Area  27 [m2] Price of Electric  10.55 [pence/kWh]

  3. How do we calculate the time of a journey, Given the Speed and Distance? If a cyclist has an average Speed = 15 [km/hr] And cycles for a Distance = 10 [km] Time of journey = ?

  4. Consider the Units of the possible answers: Speed  Distance  [km/hr]  [km]  [km(km/hr)]  [km2/hr] Speed  Distance  [km/hr]  [km]  [km/(kmhr)]  [1/hr] Distance  Speed  [km]  [km/hr]  [km(hr/km)]  [hr]

  5. Answer:  Time of journey = Distance/Speed = 10[km]/15[km/hr] = 2/3 [hr] = 40 minutes

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