This document provides an overview of the main mathematical operations taught in elementary classrooms - addition, subtraction, multiplication, and division. For each operation, it defines the key terms, symbols, rules, and provides examples. The document aims to explain the basic concepts and rules of each operation to help teach math in elementary classrooms.

1. Math in the Elementary ClassroomBy: Jessica TheisPicture: http://www.dcptsa.com/math-superstars/&docid=7vFr4rhi6u7WnM&w=600&h=544&ei=oHuTTu7uMueesQLr5L29Bg&zoom=1&iact=rc&dur=301&page=1&tbnh=115&tbnw=106&start=0&ndsp=17&ved=1t:429,r:13,s:0&tx=41&ty=62

2. Main Operations of MathAdditionSubtractionMultiplicationDivisionPicture: http://www.martincwiner.com/helpful-math-typesetting-tool-prime-twin-counting-function-example/&docid=WC14HzDEBHQVgM&w=471&h=319&ei=oHuTTu7uMueesQLr5L29Bg&zoom=1&iact=rc&dur=354&page=1&tbnh=104&tbnw=154&start=0&ndsp=17&ved=1t:429,r:10,s:0&tx=86&ty=55

3. AdditionNumbers or quantities are combined to form a new number or quantitySign indicating addition looks like this: +Words indicating addition: sum, total, plus, increase, gain, moreReference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-8823,articleId-8818.htmlPicture: http://bookbuilder.cast.org/view_print.php%3Fbook%3D20882&docid=3-mE-ncQyLrluM&w=491&h=490&ei=I32TTp6IHvKKsALSxpi-Bg&zoom=1&iact=hc&vpx=267&vpy=205&dur=66&hovh=224&hovw=225&tx=121&ty=119&sqi=2&page=5&tbnh=118&tbnw=118&ndsp=18&ved=1t:429,r:7,s:81

4. Basic Rules of Additiona+b=b+a2+3=3+2a+0=a8+0=82+1=3+1=the number following it7+2=9+2=skip counting going upReference: http://www.teach-nology.com/forum/showthread.php?t=2951Picture: http://alexisglobaloria1022.blogspot.com/&docid=8wuJYm9cTZ5ZqM&w=300&h=300&ei=In2TTvC8IJOFsAKPxPHXBg&zoom=1&iact=rc&dur=283&sqi=2&page=1&tbnh=110&tbnw=136&start=0&ndsp=21&ved=1t:429,r:10,s:0&tx=50&ty=68

5. Examples of AdditionExamples: 2+1=39+0=96+2=8

6. SubtractionA number or quantity is taken away from the groupSign indicating subtraction: -Words indicating subtraction: difference, minus, decrease, loss, less, fewer, take awayReference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-8823,articleId-8818.htmlPicture: http://www.dailyclipart.net/clipart/category/math-clip-art/&docid=m30XOhvYUErG1M&w=340&h=250&ei=U36TTtCTEK-lsQLYxcS-Bg&zoom=1&iact=rc&dur=381&sqi=2&page=3&tbnh=104&tbnw=142&ndsp=18&ved=1t:429,r:10,s:35&tx=103&ty=43

7. Basic Rules of Subtractiona-0=aa-a=06-1=5-1=the number preceding it7-2=5-2=skip counting going downPicture: http://www.ehow.com/about_5448285_rules-subtracting-negative-number-line.html&docid=LLSIzua1xiSF6M&w=225&h=220&ei=eX-TTuTID-TgsQKozPjEBg&zoom=1&iact=rc&dur=534&page=1&tbnh=124&tbnw=180&start=0&ndsp=16&ved=1t:429,r:2,s:0&tx=85&ty=62

8. Examples of SubtractionExamples:6-3=?10-0=?5-2=?

9. MultiplicationDescribes scaling one number or quantity by another number or quantitySign indicating multiplication: x or *Words indicating multiplication: multiply, product, timesReference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-8823,articleId-8818.htmlPicture: http://www.ehow.com/info_7978422_grade-5-multiplication-games.html&docid=ZlfFVY1tUYJ-7M&w=225&h=220&ei=pn-TToOZPMbLsQKVkNCsBg&zoom=1&iact=hc&vpx=775&vpy=310&dur=1912&hovh=176&hovw=180&tx=92&ty=88&sqi=2&page=7&tbnh=114&tbnw=116&ndsp=18&ved=1t:429,r:11,s:106

10. Basic Rules of Multiplicationa x b = b x aa x 10=a0a*1=a*2=double the numberx 5=counting by 5’s*9=hand trickReference: http://www.dadsworksheets.com/v1/Strategies/eight_rules_of_multiplication.htmlPicture: http://www.study-skills-for-all-ages.com/image-files/multiplication_flashcard_color.gif

11. Examples of Multiplication:7*1=74 x 2=81*10=10

12. DivisionA number or quantity is broken into a certain number of groups creating a new numberSign indicating division looks like this: / or ÷Words indication division: quotient, divideReference: http://www.cliffsnotes.com/study_guide/Keywords-for-Mathematical-Operations.topicArticleId-8823,articleId-8818.htmlPicture: http://www.coolmath4kids.com/long-division/long-division-lesson-3.html&docid=JpY5JBuTRcpA6M&w=345&h=286&ei=W4STTqicMeWMsAK73NigBg&zoom=1&iact=hc&vpx=211&vpy=168&dur=4157&hovh=204&hovw=247&tx=128&ty=90&page=1&tbnh=110&tbnw=133&start=0&ndsp=18&ved=1t:429,r:1,s:0

13. Basic Rules of Division0/a=0a÷1=aDivisible by 2:last digit ends in 0,2,4,6,or 8Divisible by 3: sum of digits are divisible by 3 Divisible by 4: last 2 digits are divisible by 4Divisible by 5: last digit is 0 or 5Reference: http://www.basic-mathematics.com/divisibility-rules.htmlPicture: http://innerknockings.blogspot.com/2010/03/division.html&docid=4kJJ_vVjONVnCM&w=300&h=300&ei=W4STTqicMeWMsAK73NigBg&zoom=1&iact=hc&vpx=86&vpy=226&dur=565&hovh=225&hovw=225&tx=129&ty=127&page=3&tbnh=116&tbnw=116&start=36&ndsp=17&ved=1t:429,r:0,s:36

14. Basic Rules of Division Part 2Divisible by 6: has to be divisible by 2 AND 3Divisible by 7: Take away last digit and double it and subract it from remaining digits. If that number is divisble by 7, the the original number is divisible by 7.Divisible by 8:last three digits are divisible by 8Divisible by 9: sum of digits is divisible by 9Divisible by 10:last digit is 0 References http://www.basic-mathematics.com/divisibility-rules.htmlPicture: http://www.superstock.com/stock-photos-images/1538R-2017&docid=u7H96Q77c2A6wM&w=323&h=350&ei=vouTTqWjOIKIsQLP2vDKBg&zoom=1&iact=hc&vpx=240&vpy=113&dur=350&hovh=234&hovw=216&tx=113&ty=104&page=1&tbnh=134&tbnw=124&start=0&ndsp=17&ved=1t:429,r:12,s:0

15. Examples of DivisionExamples:6/3=24÷1=40/7=0