Ilimin da aka samo a cikin darussan algebra da lissafi a cikin rayuwar mutane suna amfani sosai. Kwarewar da ya fi dacewa da fasaha da ke hade da ilimin lissafi shine ikon iya ɗaukar hankali cikin hankali, saboda haka yana da kyau a gane yadda za a koyi shi. A cikin rayuwa ta rayuwa, wannan yana ba ka damar yin lissafi da sauri, canza lokaci, da dai sauransu.
Zai fi dacewa wajen samar da kwarewa daga ƙuruciya, lokacin da kwakwalwa ya koyi bayanin da sauri. Akwai fasaha mai mahimmanci da yawancin mutane suke amfani da su.
Yaya za a koyi la'akari da sauri cikin tunani?
Don cimma sakamako mai kyau, dole ne a gudanar da horo a kai a kai. Bayan cimma wasu manufofi, yana da kyau a tilasta aikin. Abinda ke da muhimmanci shi ne kwarewar mutum, wato, ikon yin abubuwa da yawa a ƙwaƙwalwar ajiya da kuma kula da hankali. Babban nasara zai iya cimmawa ta hanyar mutane da ilimin lissafi. Don yin sauri ka koyi ƙidaya, kana buƙatar ka san ma'anar mahaɗin da kyau.
Mafi yawan hanyoyin da ake ƙidayawa:
- Za mu tantance yadda za mu lissafta lambobin lambobi biyu a hankali, idan kana so ka ninka ta 11. Domin fahimtar dabarar, bari mu dubi misali daya: 13 ninka ta hanyar 11. Matsalar ita ce tsakanin lambobi 1 da 3 kana buƙatar saka jimlar su, wato 4. A sakamakon haka, ya nuna cewa 13x11 = 143. Lokacin da adadin lambobi ya ba lambar lambobi biyu, alal misali, idan ka ninka 69 ta hanyar 69, sannan 6 + 9 = 15, to sai kawai ka buƙaci saka lambar na biyu, wato, 5, kuma ƙara 1 zuwa lambar farko na mai karɓan yawa.Sakamakon haka, kana samun 69x11 = 759. Akwai wata hanya ta ninka lambar ta 11. Da farko, ninka ta 10, sannan ka ƙara lambar asali zuwa gare ta. Alal misali, 14x11 = 14x10 + 14 = 154.
- Wata hanyar da za ta ƙididdige yawan lambobi a cikin hankali yana aiki don ƙaddamarwa ta hanyar 5. Wannan tsarin ya dace da kowane lambar da ya kamata a rabu da kashi 2 don farko.Da sakamakon ya kasance mahaɗin, dole ne ka sanya zero a karshen. Alal misali, don gano yadda za a ninka 504 da 5. Don yin wannan, 504/2 = 252 kuma an danganta su a ƙarshen 0. A sakamakon haka, muna samun 504x5 = 2520. Idan, a yayin da kake rarraba lamba, ba ka sami lamba, kawai kana buƙatar cire fushin. Alal misali, don gano sau sau 173 da aka karu da 5, kana buƙatar 173/2 = 86.5, bayan haka kawai cire fushin, kuma ya nuna cewa 173x5 = 865.
- Mun koyi yadda za a lissafta da sauri lambobin lambobi biyu, ta hanyar ƙara. Da farko kana buƙatar ƙara da yawa, sannan kuma, raka'a. Domin samun sakamako na ƙarshe, dole ne ku ƙara da sakamakon farko na farko. Alal misali, za mu gano yadda za su kasance 13 + 78. Abu na farko: 10 + 70 = 80, kuma na biyu: 3 + 8 = 11. Sakamakon karshe zai kasance kamar haka: 80 + 11 = 91. Wannan hanya za a iya amfani dashi idan mutum ya cire wani daga wani lamba.
Wani matsala mai gaggawa shine yadda za a yi la'akari da kashi a cikin hankali. Bugu da ƙari, don ƙarin fahimta, la'akari da misali na yadda zaka samu 15% na lamba. Da farko, ƙayyade 10%, wato, raba tsakanin 10 da kuma ƙara rabin sakamako -5%. Nemo 15% na 460:
Akwai wata hanya, yadda za a tantance sha'awa. Alal misali, idan kana buƙatar ƙayyade yadda za su kasance 6% na 400. Da farko, dole ne ka gano 6% na 100 kuma wannan zai zama 6. Don samun 6% na 400, kana buƙatar 6x4 = 24.
Idan kana bukatar samun 6% na 50, to, ya kamata ka yi amfani da wannan algorithm: 6% na 100 ne 6, kuma 50, wannan shine rabi, wato 6/2 = 3. A sakamakon haka, ya nuna cewa 6% na 50 ne 3.
Idan lambar da kake son samun kashi ba kasa da 100 ba, dole ne ka motsa motsa zuwa hagu. Alal misali, don samun kashi 6% na 35. Na farko, sami 6% na 350 kuma zai zama 21. Tamanin 6% na 35, shine 2.1.