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OCR: 3.20 DOCUM ENT S Of RKSHEETS A N D DATA. BASES Calculatio ns How does spreadsheet software work? The value of spreadsheet software S the handles the numbers pue formulas IP worksheet Think of the worksheet as having two layers -the layer you see and hidden laver underneath The hidden layer can hold for- mulas, but the result of these formulas appears son the visible layer. Figure 3-22 shows how this works Figure 3-22 The formula A4 AS works behind the scenes to tell the com puter to subtract the number cell B5 from the num ber Puts in cell B4 The form ula located in cell B6 but what appears isnot the fonnula results Whenever you add Or change something in cell, the spre: adsheet calculate s all the formula This me ans that the results displayed on your worksheet alwavs reflect the current ...