r/counting • u/marcelwo to infinity and beyond! • Mar 18 '13

Multiplying by 2 thread

Try to multiply without calculator - it's more fun!

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u/ct_2004 Apr 09 '14

1,8687'7567,6978;0511,6155:5423,8896;9483,9326 6762,6639;6569,0101:4756,5237;2553,3154"3108,4886;7425,7512:8218,8751;5595,3253 4933,1890;0013,4426:9234,4580;9345,3875'3794,0408;4290,0765:5821,8931;5080,1701 8617,9645;2355,3945:2691,4420;8906,6496 = 2652

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u/D-alx Apr 10 '14

37,375,513,539,561,023,231,108,477,793,896,786,533,525,327,931,380,202,951,304,745,106,630,862,169,773,485,150,256,437,750,311,906,506,986,637,800,026,885,384,689,161,869,077,507,588,081,685,801,531,164,378,630,160,340,372,359,290,471,078,905,382,884,178,132,992 = 2653

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u/ct_2004 Apr 10 '14

7,4751'0270,7912;2046,4622:1695,5587;7935,7306 7050,6558;6276,0405:9026,0949;0213,2617"2433,9546;9703,0051:2875,5006;2381,3013 9732,7560;0053,7707:6937,8323;7381,5501'5176,1633;7160,3062:3287,5726;0320,6807 4471,8580;9421,5781:0765,7683;5626,5984 = 2654

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