Estimating and Approximating Square Roots

Round to the Nearest Hundredth: √155

• 12.5

• 10

• 12.8

• 12.9

Mr. Cleaves wrote four irrational numbers on the SMART board and asked Saul to choose the number closest to 4. Which irrational number should Saul choose?

• √8

• √17

• √12

• √10

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

• 5

• 10

• 25

• 7

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

• 7.3

• 7.8

• 8

• 7

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

• 6.7

• 6.2

• 6

• 7

Which of the following is the best approximation of $\sqrt{27}$ ?

• 5.2

• 5.7

• 6

• 5

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

• 48

• 81

• 28

• 36