Mastering the SUM Function in Excel
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Excel's most powerful formula can calculate thousands of numbers in one second. Most people waste
hours doing it manually. Let me show you the technique that changed everything for data workers.
Meet the SUM function. This single command replaces endless calculator work. Type equals SUM,
open parenthesis, select your range, close parenthesis. Done. What took thirty
minutes now takes three seconds. Here's why it matters. When you're building budgets or tracking
expenses, every number counts. One typo with manual addition ruins everything. SUM eliminates human
error completely. It recalculates instantly when numbers change. No double checking
needed. The real power comes when you combine ranges. Multiple columns,
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