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Question
Complete the repeated subtraction to find the square root of 225.
Complete the repeated subtraction to find the square root of 225.
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Solution
The correct option is D 15
225−1=224 ,224−3=221,221−5=216, 216−7=209,
209−9=200 ,200−11=189189−13=176 , 176−15=161, 161−17=144,
144−19=125125−21=104104−23=8181−25=5656−27=29,
29−29=0=15 Therefore, D is the correct answer.
225−1=224 ,
224−3=221,
221−5=216,
216−7=209,
209−9=200 ,
209−9=200 ,
200−11=189
189−13=176 ,
176−15=161,
161−17=144,
144−19=125
144−19=125
125−21=104
104−23=81
81−25=56
56−27=29,
29−29=0=15
29−29=0=15
Therefore, D is the correct answer.
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