Secara basic perkalian 11 sama dengan kita kalikan 10 lalu tambah 1.
misal : 7 x 11 = 7 x 10 = 70 + 7 = 77
contoh lain : 43 x 11 = 473, 52 x 11 = 572
Nah, ada rumus rahasia agar anda bisa mengalikan suatu bilangan dengan 11 secara cepat dan praktis.
Caranya :
Coba anda perhatikan 43 x 11 =
Anda tulis angka pertama : 4
Jumlahkan angka pertama dan angka kedua = 7
Tulis angka terakhir : 3
jadi jumlah totalnya adalah = 473, mudah bukan?
Anda bisa terapkan untuk angka-angka yang lain :
213 x 11 = .......
217 x 11 = .......
453 x 11 = .......
Cara Cepat Menghitung Perkalian 11
Written By Unknown on Sunday 3 February 2013 | 14:40
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