Approximate Compare Square Roots

Which number is the closest approximation to the value of √50?

• 5

• 10

• 25

• 7

Between which two whole numbers is the square root of 20?

• 5 and 6

• 10 and 2

• 4 and 5

• 3 and 4

Which number has a square root that  is between 7 and 8?

• 48

• 81

• 60

• 36

Between which two whole numbers is the 
√20 ?

• 5 and 6

• 10 and 2

• 4 and 5

• 3 and 4

Level 3: Estimate the square root.

• Between 5 and 6 and closer to 5

• Between 5 and 6 and closer to 6

• Between -4 and -5 and closer to -5

• Between -5 and -6 and closer to -6

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

• 65 and 75

• 9 and 10

• 10 and 11

• 11 and 12

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

• 48

• 81

• 28

• 36

Find the best estimate for √18 .
Look at the number line.

• 4.2

• 4.4

• 5.1

• 4

Estimate  √95 .

• 8   14/19

• 9    14/19

• 10    14/19

• 9