How do you do this
2 answers:
Answer:
The best choice is to use a calculator (the button is ), but if that is not an option here are a few tips.
If a perfect square ends with a 1, then the last digit of its square root has to be either 1 or 9.
If a perfect square ends with a 4, then the last digit of its square root has to be either 2 or 8.
If a perfect square ends with a 5, then the last digit of its square root is definitely 5.
If a perfect square ends with a 6, then the last digit of its square root has to be either 4 or 6.
If a perfect square ends with a 9, then the last digit of its square root has to be either 3 or 7.
I took a look and all of them seem to be perfect squares so hopefully this helps!
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