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DEWI YULIANA (110201204063) MATH TRICK

DEWI YULIANA (110201204063) MATH TRICK. PERKALIAN 2 DIGIT ANGKA DENGAN 99 AB x 99 =…….., Langkahnya : a) menentukan 2 digit depan dengan cara bilangan AB dikurangi 1 →( AB - 1) b) menentukan 2 digit terakhir dengan cara bilangan 99 dikurangi bilangan AB → (99 - AB)

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DEWI YULIANA (110201204063) MATH TRICK

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  1. DEWI YULIANA (110201204063)MATH TRICK PERKALIAN 2 DIGIT ANGKA DENGAN 99 AB x 99 =……..,Langkahnya: a) menentukan 2 digit depandengancarabilangan AB dikurangi1 →( AB - 1) b) menentukan 2 digit terakhirdengancarabilangan 99 dikurangibilangan AB → (99 - AB) c) sambungkankeduanya (AB-1)(99-AB) CONTOH: (-1) 18 X 99 = (-17) 17 82

  2. Math black hole Keunikan dari Perkalian satu satu 1 x 1 = 1 11 x 11 = 121 111 x 111 = 12321 1111 x 1111 = 1234321 11111 x 11111 = 123454321 111111 x 111111 = 12345654321 1111111 x 1111111 = 1234567654321 11111111 x 11111111 = 123456787654321 111111111 x 111111111 = 12345678987654321

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