1
Question
What is the nearest square number of √15, √46 and √250?
What is the nearest square number of √15, √46 and √250?
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Solution
√400 20
√361 19
√324 18
√289 17
√256 16
√225 15
√196 14
√169 13
√144 12
√121 11
√100 10
√81 9
√64 8
√49 7
√36 6
√25 5
√16 4
√9 3
√4 2
√1 1
It is necessary that you memorize this table. For estimating square roots of non-perfect squares and other maths problems, you'll need these.
From the table it is clear that, the nearest square number of
i) √15 is √16 = 4
ii) √46 is √49 = 7
iii)√250 is √256 = 16
√361 19
√324 18
√289 17
√256 16
√225 15
√196 14
√169 13
√144 12
√121 11
√100 10
√81 9
√64 8
√49 7
√36 6
√25 5
√16 4
√9 3
√4 2
√1 1
It is necessary that you memorize this table. For estimating square roots of non-perfect squares and other maths problems, you'll need these.
From the table it is clear that, the nearest square number of
i) √15 is √16 = 4
ii) √46 is √49 = 7
iii)√250 is √256 = 16
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