Approximating Irrational Number

In between what two integers is the square root of 77?

• 5 and 6
• 6 and 7
• 7 and 8
• 8 and 9

In between what two integers is the square root of 44?

• 3 and 4
• 4 and 5
• 5 and 6
• 6 and 7

Between which two whole numbers is the 
√20 ?

• 5 and 6
• 10 and 2
• 4 and 5
• 3 and 4

The square root of 99 falls between which two consecutive whole numbers?

• 7 and 8
• 8 and 9
• 10 and 11
• 9 and 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 number is the closest approximation to the value of √50?

• 5
• 10
• 25
• 7

Evaluate √72. Round your answer to the nearest Whole Number. 

• 7.2
• 7
• 8
• 9

Determine if it is a rational or irrational number:
√20

• Rational
• Irrational

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

• 65 and 75
• 9 and 10
• 10 and 11
• 11 and 12