CHAPTER - 09
      SEBA COMPUER SCIENCE 
      CLASS - VIII
           FORMULAS IN MICROSOFT EXCEL


      A.      Fill in the blanks:

      1.       Excel Provides us a large number of in-built formulae which are called Functions

      2.       A group of related cells in a workbook is called a Range

      3.       Excel provides a text box called the formula bar to write formulas.

      4.       The Enter key is used to evaluate a formula entered in a cell.

      5.       The sum function adds a series of numbers.

      6.       The #REF formula contains an invalid reference to a cell.

      7.       #VALUE! Formula contains type of data or cell or function names that cannot be used in the formula.

      8.       #NAME? formula contain incorrectly spelling spelled cell or function names.

      9.       You can cancel a formula by pressing the Esc key.

      10.   Cell references and Reference name indicate the location of the cell used in the formula.

      11.   Operators tell Excel the kind of calculation to be performed.

      12.   The active cell in a worksheet is surrounded by a highlighted border called selector.

       

      B.      Answer the following questions:

      1.       Explain the order in which Excel performs calculations.

      Excel perform calculations order determine by three rules:

      Precedence Rule: When there are several calculation operators in a formula, Excel follows the mathematical rules BODMAS.

      Left to Right Rule: When a formula contain operation with the same level of precedence, such as multiplication and Division or addition and subtraction, excel calculates them from left to right.

      Parentheses Rule: When a formula contains parentheses, the operators within them are performed first. This means you can change the order of precedence by using parentheses.

       

      2.       What do you understand by Relative Cell References?

      Relative cell references are the default cell reference in Excel. It is simply the combination of column and row number. When you copy the formula from one cell to another the relative cell address changes depending on the relative position of column and row. Relative references are used when we want to perform a similar operation on multiple cells and the formula must change according to the relative address of column and row.

       

      3.       Define Cell Range. How can it be selected?

      Cell Ranges is a group of related cells in a worksheet.

      To select a range of cell:

      i)                    Click on the cell in one of the corners of the range cell you wish to select.

      ii)                   Hold the left mouse button down and drag horizontally and vertically until the range you wish to select is highlighted.

      iii)                 Release the click. You will see the range you want are selected.

       

      4.       Give two common examples of common error while entering formulas in Excel.

      The two common error we will face while entering formulas in Excel are:

      i)                    Typing Mistakes

      ii)                   Logical Error or Error in Referencing of the Cells.

       

      5.       What is Absolute Reference in Excel?

      Absolute Reference in Excel refers to a reference that is “Locked” so that rows and column won’t change when copied. Unlike Relative reference, an Absolute reference refers to an actual fixed location on a worksheet.

       

      6.       How can you Create an Absolute Reference in Excel? Give Example.

      To Create an Absolute Reference in Excel, add a dollar sign ($) before the row and Column. For example, an absolute reference to A1 looks like this $A$1.

       

      7.       Write the use of common mathematical function in Excel.

      Some of the common Mathematical function in Excel are:

      i)                    SUM Function: It is used to quickly add numbers together.

      ii)                   PRODUCT Function: It is used to multiply all the numbers referenced by it.

      iii)                 AVERAGE Function: It is used to compute the mean or average of the numbers in a range by adding a series of numeric values and then divide the result by the number of values.

      iv)                 MAX Function: It is used to returns the largest value from a group or range of values.

      v)                   MIN Function: It is used to returns the least value from a group of range of values.

      vi)                 COUNT Function: It is used to tell how many cells in a given range contain numbers, including dates and formulas that evaluate to numbers.

       

      8.       Write the steps to use the SUM function from the Ribbon.

      Using Ribbon, we can use the SUM function in the following way:

      i)                    Select desire range of cell.

      ii)                   Click on the Formulas tab on the ribbon.

      iii)                 In the Function Library group, click on the down arrow to right of the AutoSum button. (A list of function appears).

      iv)                 Click the SUM function.

       

      9.       What is marquee in Excel?

      Marquee is a flashing border surrounds the cell and a reference to the cell is inserted in cell when you click each cell.

       

      10.   When Excel perform Left to Right operation?

      Excel perform Left and Right operation when a formula contains both multiplication and division or addition and subtraction.

       

      11.   What are Formulas in Excel? How can we use Formula?

      Formula is a mathematical statements or instruction that describe the actions to be performed on numeric values.

      We can use formula to perform calculation on values stored in our worksheet.


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