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Computer Skills 101 MS Excel 2010 Homework Topics Covered: Functions: ROUND, COUNT, COUNTBLANK, COUNTA, COUNTIF, IF, AND, OR, CHARTS Working Steps: 1. Enter the following table Sales 420 City jan feb mar apr may jun jul aug 350 270 350 660 500 150 678 800 sep 2. Calculate the summation of sales using predefined function. 3. Calculate the average of sales using predefined function. 4. Enter number 276.587 in a cell. 5. Round the number to 1 decimal digit 6. Round the number to 2 decimal digits 7. Round the number to 3 decimal digits 8. Round the number to 0 decimal digits 9. Round the number to -1 decimal digits 10. Enter the following table in another sheet: sara A 6 B yaser mohannad word 3 network B excel outlook 11. Count number of cells that contain numbers only. (Hint: use COUNT) 12. Count number of empty cells only. (Hint: use COUNTBLANK)