Number as Measure Math Example 4

Follow the full solution, then compare it with the other examples linked below.

Example 4

medium
A thermometer reads 25°25°C. Convert this to Fahrenheit using F=95C+32F = \frac{9}{5}C + 32.

Solution

  1. 1
    Substitute C=25C = 25: F=95(25)+32F = \frac{9}{5}(25) + 32.
  2. 2
    95×25=2255=45\frac{9}{5} \times 25 = \frac{225}{5} = 45. Then 45+32=7745 + 32 = 77.

Answer

77°F77°\text{F}
Different unit systems use different scales to measure the same physical attribute (temperature). The conversion formula changes the number but preserves the underlying quantity. The same physical warmth is described as 25 in Celsius and 77 in Fahrenheit.

About Number as Measure

Using numbers to represent the size or amount of a real-world quantity, always paired with a unit of measurement.

Learn more about Number as Measure →

More Number as Measure Examples

Example 1 easy

A pencil measures 17.3 cm long. Identify the number, the unit, and what is being measured.

Example 2 medium

A rope is measured as 3 meters. Convert this to centimeters and to millimeters.

Example 3 easy

Two students measure the same desk. Student A says it is 90 cm; Student B says it is 0.9 m. Are they

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