smh1996 smh1996

28-07-2016
Mathematics

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Multiply using duplation and mediation.

731 × 54

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Аноним Аноним

28-07-2016

Hey there,

[tex]731 * 10 = 7310 731 * 20 = 14620 731 * 5 = 3655 731 * 25 = 14620 + 3655 = 18275 731 * 25 = 18275 + 18275 = 36550 [/tex]

[tex]731 * 2 = 1462 731 * 4 = 2924 Therefore, 731 * 54 = 36550 + 2924 = 39474 [/tex]

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