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mental arithmetic for squares arund 50**2
+13
Author: Oma Falk
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PY
py
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def explain(num):
delta = num -50
print("{0} = 50{1} \n {0}**2 = 25{1} append {2
} -->{3} \n ---------- ".format(num,(num > 49) * "
+" + str(delta),str((delta)**2 ).zfill(2),num**2))
for i in range(41,60):
explain(i)
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OUTPUT