1.2 Lesson 1.2 Conversions Between Metric & Imperial Systems In many circumstances, an estimated conversion is all that is required. Even though 1 inch = 2.54 cm, approximate relationships such as 1 in. = 2.5 cm, can be used to estimate conversions between the metric and imperial systems. Example 1) Convert 12 miles to kilometers. 1 1.2 Lesson Example 2) Convert 5 m to yards. Example 3) Convert 144 pounds to kilograms. 2 1.2 Lesson Example 4) Convert 30 cm to inches. Example 5) Converting gallons to litres... 1 imperial gallon = 4.546 L Most people round to... 1 gallon = 4 L *estimate* so... if you convert 8 litres of milk = ... ? 3 1.2 Lesson Example 6) Convert 30oC to degrees Fahrenheit. Example 7) Convert 40oF to degrees Celsius. / 4 1.2 Lesson 5
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