Approximating Square Roots

The √20 is between which two integers?

• 2 & 3

• 3 & 4

• 4 & 5

• 5 & 6

The √40 is between which two consecutive whole numbers?

• 7 & 8

• 4 & 5

• 5 & 6

• 6 & 7

Which of the following is the best approximation of $\sqrt{70}$ ?

• 8.4

• 8.7

• 8

• 9

Which of the following is the best approximation of $\sqrt{54}$ ?

• 7.3

• 7.8

• 8

• 7

• A

• B

• C

• D

What numbers replace the question marks?  (click to see the problem)

• 65 and 75

• 9 and 10

• 10 and 11

• 11 and 12

Estimate the solution(s) of the equation by rounding to the nearest integer(s).

• z = ± 9

• z = 9

• z = -9

• z = ± 10

Estimate the square root.

• 3

• 4

• 5

• 6

Which of the following is the best approximation of \(\sqrt{45}\)?

• 6.7

• 6.2

• 6

• 7

Which number has a square root that is between 5 and 6?

• 48

• 81

• 28

• 36