Reciprocals

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Reciprocals
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What are reciprocals?

• The reciprocal of a number is
• Using the rules of fractions gives these results
• The reciprocal of n is
• The reciprocal of is n

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What are reciprocals?

• The reciprocal of is
• To find reciprocals on a calculator, use 2ndF x-1
  ( in orange under x² button)

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Examples

• Find the reciprocal of
• 1.25 giving answer as a decimal
• 1 1.25 0.8
• To give this answer as a fraction, once you have
  the answer press ab/c button. This will the give
  the answer 4 ? 5 which means

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Exercise

• Write the reciprocals of the following
• a) 3 b) 6 c) 49 d) 100
• e) 640 f) 2.5 g) 3.2 h) 0.05
• i) 125 j) 0.8 k)
• l) m)