Abacusrhymesofaddition(abacusrhymesofaddition)Thebasicrulesofabacusaddition.Referstotheformulascompiledaccordingtotheactionofdialingbeadsintheabacusaddition.Thefirstnumberofeachmantraistheaddition,andtherestofthewordsareTheactionofdialingthebead.Therearefourwords"up","down","go",and"in"inthedialingmotion.Meaning(actuallyaddfive);"Go"meanstosubtract;"Jin"meanstoaddontheleftsidewhenthisfileisfulloften.Therearefourtypesofabacusadditionformulas,thelistisasfollows:
┌─┬──────────┬───────────┐
│Broken│NotCarrying│Carrying│
│├───┬─────┼─────┬───────┤
││Adddirectly│Collectfiveplus│Intotenplus│Entertenandbreakfiveplus│
├─┼───┼─────┼────┼───────┤
│1│onePrevious│Fivetofour│Onetoninetoone││
├─┼───┼────┼─────┼───────┤
│2│twouptwo│twodownfivetothree│twotoeightintoone││
├─┼───┼─────┼─────┼───────┤
│3│Threeonthree│Threeonfive│Threeonfivetotwo│Threetosevenintoone││
├─┼───┼─────┼─────┼───────┤
│4│fouronfour│fourunderfivetoone│fourtosixintoone││
p>├─┼───┼─────┼─────┼───────┤
│5│Fiveonfive││FivetofiveJinyi││
├─┼───┼─────┼────┼────────┤
│6│sixonSix││sixtofourintoone│sixononetofiveintoone│
├─┼───┼─────┼─────┼───────┤
│7│sevenonseven││seventothreeintoone│seventotwotofiveintoone│
├─┼───┼─────┼─────┼───────┤
│8│eightoneight││eighttotwointoone│eighttothreetofiveintoone│
├─┼───┼─────┼─────┼───────┤
│9│nineonnine││ninetooneintoone│nineonFourtofiveinone│
└─┴───┴─────┴─────┴───────┘
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