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16 November, 02:44

15X15=?

25X25=?

35X35=?

45X45=?

55x55=?

65X65=?

...

95x95=?

who can tell me how to do these multiplications without a calculator in 30 seconds?

tell me the details

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Answers (1)
  1. 16 November, 03:31
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    5x5 = 25 plus whatever number before the 5 in the equation is added to 25. 15x15 = 5x5=25 plus 2 (move to hundredths place) = 225. 25x25 = 5x5=25 plus 4 (move to hundredths place) = 625
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