150 XP
CLAUDE COWORK · USE IT CONFIDENTLY Plus lesson 15 min

Build a spreadsheet you can check

Turn October's orders into a spreadsheet with formulas, catch a repeated order and check the totals.

New to Claude Cowork? Start with the first lesson in this guide.

What this lesson covers

  1. Know what the numbers should be
  2. Ask for formulas, not typed numbers
  3. Spot a total that counts a row twice
  4. Check three numbers by hand
  5. Write down what you checked

You’ll come away with: Know roughly what the numbers should be, ask for formulas you can inspect, and check the totals by hand.