What are those mysterious square roots that often confuse students and complicate their lives? The truth is that to understand them, we need to grasp the concept of the inverse operation.

What are those mysterious square roots that often confuse students and complicate their lives? The truth is that to understand them, we need to grasp the concept of the inverse operation.

When we solve an exercise like $5=25^2$, it's clear that $5$ times $5$ (that is, multiplying the number by itself) results in $25$. This is the concept of a power, or to be more precise, a square power, which to apply, we must multiply the figure or the number by itself.

**The concept of "square root" refers to the inverse operation of squaring numbers.**

That is, if we have $X^2=25$ and we want to find the value of $X$, what we need to do is perform an identical operation on both sides of the equation.

Question 1

\( \sqrt{441}= \)

Question 2

\( \sqrt{64}= \)

Question 3

\( \sqrt{36}= \)

Question 4

\( \sqrt{49}= \)

Question 5

Choose the largest value

$\sqrt{441}=$

The root of 441 is 21.

$21\times21=$

$21\times20+21=$

$420+21=441$

$21$

$\sqrt{64}=$

8

$\sqrt{36}=$

6

$\sqrt{49}=$

7

Choose the largest value

$\sqrt{25}$

Question 1

\( \sqrt{121}= \)

Question 2

\( \sqrt{100}= \)

Question 3

\( \sqrt{144}= \)

Question 4

\( \sqrt{x}=1 \)

Question 5

\( \sqrt{36}= \)

$\sqrt{121}=$

11

$\sqrt{100}=$

10

$\sqrt{144}=$

12

$\sqrt{x}=1$

1

$\sqrt{36}=$

6

Question 1

\( \sqrt{16}= \)

Question 2

\( \sqrt{x}=2 \)

Question 3

\( \sqrt{9}= \)

Question 4

\( \sqrt{4}= \)

Question 5

\( \sqrt{225}= \)

$\sqrt{16}=$

4

$\sqrt{x}=2$

4

$\sqrt{9}=$

3

$\sqrt{4}=$

2

$\sqrt{225}=$

15