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Without actual division, state whether the following is a terminating decimal. 13/80 - Mathematics

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Question

Without actual division, state whether the following is a terminating decimal.

`13/80`

Sum
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Solution

80

= 2 × 2 × 2 × 2 × 5 

= 24 × 51

Prime factors are only 2 and 5.

Therefore, `13/80` is a terminating decimal.

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Chapter 1: Rational and Irrational Numbers - MISCELLANEOUS EXERCISE [Page 17]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 1 Rational and Irrational Numbers
MISCELLANEOUS EXERCISE | Q 1. (i) | Page 17
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