How to use Back-of-an-envelope in a sentence

back-of-an-envelope
  • From scribbled notes on the back of an envelope during a phone conversation.

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  • A short plan written on the back of an envelope can be as effective as a large and complex plan that is written in a computer spreadsheet.

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  • Another good way to stay organized when using coupons is to write your shopping list on the back of an envelope.

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