Open a new spreadsheet. Type “Practice” in Cell A1. In Cell A2, type the number “35;” in A3, type “42;” and, in A4, type “50.”

a. Use the sum function to add them together in cell A5.

b. Calculate a 10% increase in the numbers in Column A in Column B by using a formula. Type “Increase 10%” in B1.

c. Add together the original numbers in Column A and the increases in Column B. Use a formula and place in Column C. Type “Total” in C1.

d. Save the file as “Excel_Practice.xls.”