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Mathematical Symbols

Mathematical Symbols. Diane Miller. Navigational Page. The purpose of this Power Point is to be interactive and lead you to your desired place. The symbol will take you to the table of contents. The symbol will take you to the About Me page.

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Mathematical Symbols

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  1. Mathematical Symbols Diane Miller

  2. Navigational Page • The purpose of this Power Point is to be interactive and lead you to your desired place. • The symbol will take you to the table of contents. • The symbol will take you to the About Me page. • The symbol will take you to the beginning of the slide show. • The symbols will take you to the previous slide or the next slide.

  3. Table of Contents • Addition Sign • Subtraction Sign • Multiplication Sign • Division Sign • Inequality Signs

  4. Addition Sign • This is an addition (or plus) sign: + • Addition is a mathematical operation that is used to represent the total amount of objects together in a collection. • Other phrases used to signify addition are: • the sum of • all together • plus • More • In all

  5. Example of Addition • Kelly has 7 chocolate bars. Kristie has 9 chocolate bars. How many chocolate bars do they have in all? • Key words: • 7 • 9 • In all • 7 + 9 = 16 • They have 16 chocolate bars in all. • Practice addition here.

  6. Subtraction Sign • This is a subtraction (or minus) sign: - • Subtraction is the operation used to deduct one number from another. • Other phrases that signify subtraction: • Take away • Less • Difference

  7. Example of Subtraction • Mrs. Miller’s class has 24 pencils. They forgot 13 of them in the computer lab. How many pencils do they have left? • Key words: • 24 • 13 • Left • 24 – 13 = 11 • They have 11 pencils left. • Practice subtraction here.

  8. Multiplication Sign • This is the traditional multiplication sign: x • There are many other ways to represent multiplication. Click here to learn about them! • Multiplication is a mathematical operation used to add an integer to itself a specified number of times. • Other phrases that specify multiplication: • Times • Double, triple (etc)

  9. Math Magician • This is a great resource to practice multiplication skills. You can choose the particular multiplication facts you want to work on or let the magician choose for you. Your score will be based on 100% and you will be timed for 1 minute. WARNING: This game is addicting!! • Mathmagician Games | ClassBrain Games- Educational Games for Kids of All Ages • This website can also be used for Addition, Subtraction, and Division.

  10. Division Sign • This is a division sign: ÷ • Division is a mathematical operation of distributing among a number. • Other phrases that signify division: • Split • Separate • Distribute • Share

  11. IXL Math…Online Math Practice • This is a fun and educational online math website for grades K-8. You can search for topics or skills, and you can search by grade level. • IXL Math | Online math practice and lessons

  12. Inequality Signs • These are inequality signs: < (less than), > (greater than), <(less than or equal to), > (greater than or equal to), ≠ (does not equal) . • These inequality signs indicate that one quantity is something other than equal to another.

  13. Inequality Signs • Can you tell if this number sentence is True or False? 15 > 14 – 3 • Can you tell if this number sentence is True or False? 30 x 10 ≠ 300 TRUE TRUE FALSE FALSE

  14. Great Job!!! Click Here To Go Back To Another Question

  15. Sorry, You Got that Wrong!!! Click Here To Go Back To Another Question

  16. PEMDAS-Order of Operations PEMDAS is an acronym which stands for : Using Order of Operations combines two or more mathematical symbols. Parenthesis Exponents Multiplication Division Addition Subtraction It is the order in which you must perform mathematical operations in order to get a correct answer. Example: 22 – 12 + 5 (3) = 25 The first operation to be completed was the parenthesis, 5x3 = 15. Now the number sentence is 22 – 12 + 15. Addition and subtraction should be done in the order they appear from L to R, as should multiplication and division. 22 – 12 + 15 = 25.

  17. Other Symbols for Multiplication • Multiplication can be represented with parenthesis (5)(3). • It can also be represented with an asterisk, although it is not as common. * • When using variables, a number next to a variable represents multiplication. 4Y means 4 times Y.

  18. Can You Solve This? • 80 + (6)(3) + 12 ÷ 4 -1= • A. 111 • B. 26.5 • C. 100 • D. 102

  19. You’re right!!

  20. Sorry, Try Again!

  21. About Me • Sixth grade teacher at Riverside East Elementary • Previously worked as a Teacher’s Aide in Kindergarten • My favorite subject in school is Math • My favorite pass time outside of school is spending time with my family

  22. Bibliography • Google images • Mathmagician Games | ClassBrain Games- Educational Games for Kids of All Ages • IXL Math | Online math practice and lessons

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