Question

find the square root of 90 by estimation method​

Answer 1

Answer:

Find 2 perfect squares closest to 90. They are 81 and 100. 81 < 90 < 100.

√81 < √90 < √100.

9 < √90 < 10.

Divide 90 by 9 or 10. let's divide by 9. 90 ÷ 9 = 10.

Find the average of this quotient and the 9. ( 10 +9) ÷ 2.

19 ÷ 2 = 9.5.

Thus √90 ≈ 9.5.

Step-by-step explanation:

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Answer 2

Answer:

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