Question

What will be the unit digit of the squares of the following numbers?
(1) 951
(ii) 502
(iii) 329
(iv) 643
(vi) 7625 (vii) 68327 (viii) 95628 (ix) 99880
I want the process to solve the question
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Answer 1

The method is like this:

If the units digit of a number is 'x', then the units digit of the square of the number will be x².

answers:

(i) 1

(ii) 4

(iii) as 9² is 81, we take 1 as the units digit

(iv) 9

(vi) as 5² is 25, units digit = 5

(vii)as 7² is 49, units digit = 9

(viii) as 8² is 64, units digit=4

(ix) 0

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