Tag Archives: Speed Maths

Square roots of perfect squares

         To find the square root of a perfect square number:  We find the first figure by looking at the first figures and we find two possible last figures by looking at the last figure.   We find … Continue reading

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Divisibility By Eleven

    Consider for example: Is 647053 divisible by 11 ? Simply keeping on subtracting the unit’s digit from the  number ( without units digit) 64705 – 3 = 64702 6470 – 2 = 6468 646 – 8 = 638 … Continue reading

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Adding Time In Easy

   When I was solving the problem based on time , I was thinking about a shortcut way of  adding the given two times. Consider for example , if I write take  4 hours 35 minutes to write 16 pages … Continue reading

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