IXL - Estimate square roots and cube roots (Algebra 2 practice)

Which two integers is

141

between?

12 and 13

11 and 12

10 and 11

13 and 14

ref_doc_title.

Learn with an example

question

Which two integers is

between?

7 and 8

6 and 7

8 and 9

9 and 10

key idea

Taking the square root (

) is the inverse of squaring. For example, 9 = 3 since 9 = 32.

A perfect square is the result when a whole number is multiplied by itself. The square root of a perfect square is always a whole number.

solution

Find the perfect squares that are just below and just above 61.

The perfect square just below 61 is 49:

= 7

The perfect square just above 61 is 64:

= 8

, so 7 <

< 8.

Looking for more? Try these:

Lesson: Square roots

Lesson: Cube roots

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Teacher tools

Work it out

Not feeling ready yet? These can help:

E.2Estimate positive square roots

E.10Estimate cube roots

Lesson: Square roots

Lesson: Cube roots

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