Finding the Square Root of Numbers

Estimate the square root of 29.

• Between 4 and 5 and closer to 5

• Between 5 and 6 and closer to 5

• Between -4 and -5 and closer to -5

• Between -5 and -6 and closer to -6

Which number has a square root that is between 3 and 4?

• 14

• 8

• 17

• 0

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

• 48

• 81

• 28

• 36

If I know the area of a square, how do I find the side length?

• I square the area.

• I divide the area by 2.

• I take the square root of the area.

• I divide the area by 4.

x² = 16

• ± 4

• ± 8

• 4

• 8

• x = 8 or x = -8

• x = 9.7 or x = -9.7

• x = 4096 or x = -4096

• x = 3 or x = -3

Solve : x² = 16

• ± 4

• ± 8

• 4

• 8

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

• 5 and 6

• 6 and 7

• 7 and 8

• 8 and 9

Find the value[s] of the expression.

• No real solutions

• 14

• 13

x² = 121

• 11,-11

• 11

• -11

• 10,-10