Using Basic Formulas and Functions Lesson 8A. Formulas tab.

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Presentation transcript:

Using Basic Formulas and Functions Lesson 8A

Formulas tab

Formula for adding Begin all formulas with =. Formulas can contain values or cell references. Use + between two numbers or cell references. NOTE: Formulas should be keyed (entered) without spaces, but if you key spaces, Excel eliminates them when you press Enter.

Formula for subtracting Begin all formulas with =. Formulas can contain values or cell references. Use - between two numbers or cell references.

Subtracting In A8, create a formula to subtract 125 from 189. –The value in A8 should be 64. –Just like in word problems, put the number after the word from first.

How do you revise formulas? Formulas are revised just like any other cells (F2 or double- click). Formulas can also be changed by clicking in the formula bar and changing parts of the formula.

Formula for multiplying Use asterisk (*) to multiply values or cell references.

Formula for dividing Use slash (/) to divide values or cell references.

Order of operation in an Excel formula PEMDAS –Parentheses first –Exponents next –Multiplication and Division –Addition and Subtraction 5+6*15/3-1 First, multiply 6*15 (90) Second, divide 90 by 3 (30) Third, add 5 to 30 (35) Fourth, subtract 35 – 1 (34)

Use parentheses in a formula to change the order of calculation (5+6)*15/(3-1) –First, add 5+6 (11) –Second, subtract 3-1 (2) –11*15/2 –Third, multiply 11*15 (165) –Fourth, divide 165/2

Use parentheses in a formula to change the order of calculation Key =5+2*8 in cell E7. Press Enter. –2*8 is done first (16), then 5 is added (21). Key =(5+2)*8 in cell F7. Press Enter. –5+2 is done first because of the parentheses (7), then multiply by 8 (56)

Relative cell references A cell reference identifies its location (A1). Relative cell references depend on their location. They adjust when copied or moved.

Functions A function is a predefined formula that performs a calculation. –A function knows what math to do based on its name. =FUNCTION(arguments) SUM =sum(C4:C9) –Adds a range of cells AVERAGE =average(C4:C9) –Finds the average of a range of cells MIN =min(C4:F9) –Finds the smallest of a range of cells MAX =max(C4:F9) –Finds the largest of a range of cells

Using Functions Type the function OR Use Insert Function button on Formulas tab to search for functions OR Click the Insert Function button to the left of the Formula Bar

Using SUM (function) and AutoSum (tool) NOTE: Because it is used so frequently, AutoSum is available on the Formulas tab in the Function Library group and on the Home tab in the Editing group.

Using SUM (function) and AutoSum (tool) Put your cursor where you want the result of the SUM function to be. Click AutoSum. Excel assumes you want to add cells directly above the current cell or immediately to the left. If the range highlighted is correct, press Enter. If the range is not correct, select the correct cells and press Enter.

Using the COUNT and COUNTA functions COUNT tells you how many cells in the range have numbers in them. (Count Numbers) COUNTA tells you how many cells in the range are not blank. (Count All)

Using AVERAGE Instead of writing a formula to add cells and then divide by how many there are, use AVERAGE.

Using MIN and MAX Use MIN to find the smallest value in a range (minimum) Use MAX to find the smallest value in a range (maximum)

Show Formulas on the Screen Click Show Formulas in the Formula Auditing group on the Formulas tab. All worksheet formulas are displayed. Click Show Formulas again to display values. OR Ctrl + `

Print Formulas 1.Click the Page Layout tab and click Print in Gridlines and Print in Headings in the Sheet Options group. 2.Click Orientation in the Page Setup group and click Landscape.

Print Formulas Go to Print Preview. Click the Page Setup link at the bottom of the print settings to open the Page Setup dialog box. Click Fit to: and leave the defaults as 1 page wide by 1 tall.