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Selalu di tambah1

Math Trick Trik mengalikan bilangan 2 digit yang angka belakangnya berjumlah 10, tapi angka depannya sama. Misal 13 x 17 maka angka depan kedua ditambah 1, angka depan dikali angka yang ditambah 1 tadi. Kemudian angka belakang dikali angka belakang. 2. 2. 1. Selalu di tambah1. 1. 3. 1. 7.

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Selalu di tambah1

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  1. Math Trick Trik mengalikan bilangan 2 digit yang angka belakangnya berjumlah 10, tapi angka depannya sama. Misal 13 x 17 maka angka depan kedua ditambah 1, angka depan dikali angka yang ditambah 1 tadi. Kemudian angka belakang dikali angka belakang. 2 2 1 Selaludi tambah1 1 3 1 7 2 21 51 503 x 507 = 255021 3004 x 3006 = 9030024 21 301 RINA DWI WULANDARI

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