81 reapeted subtraction methods
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Finding square of 81 using repeated subtractions of odd numbers.
81-1=80
80-3=77
77-5=72
72-7=65
65-9=56
56-11=45
45-13=32
32-15=17
17-17=0
Therefore, √81 =9
Hope it helps :)
Finding square of 81 using repeated subtractions of odd numbers.
81-1=80
80-3=77
77-5=72
72-7=65
65-9=56
56-11=45
45-13=32
32-15=17
17-17=0
Therefore, √81 =9
Hope it helps :)
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