To find the square root of a number, we are looking for a value that, when multiplied by itself, gives us that original number. Let's go through each problem one by one.
1.
$\sqrt{121}$: We need a number times itself that equals 121.
* $10 \times 10 = 100$ (too small)
* $11 \times 11 = 121$ (correct)
* So, $\sqrt{121} = 11$.
2.
$\sqrt{16}$: We need a number times itself that equals 16.
* $4 \times 4 = 16$
* So, $\sqrt{16} = 4$.
3.
$\sqrt{81}$: We need a number times itself that equals 81.
* $9 \times 9 = 81$
* So, $\sqrt{81} = 9$.
4.
$\sqrt{1}$: We need a number times itself that equals 1.
* $1 \times 1 = 1$
* So, $\sqrt{1} = 1$.
5.
$\sqrt{4}$: We need a number times itself that equals 4.
* $2 \times 2 = 4$
* So, $\sqrt{4} = 2$.
6.
$\sqrt{49}$: We need a number times itself that equals 49.
* $7 \times 7 = 49$
* So, $\sqrt{49} = 7$.
7.
$\sqrt{100}$: We need a number times itself that equals 100.
* $10 \times 10 = 100$
* So, $\sqrt{100} = 10$.
8.
$\sqrt{25}$: We need a number times itself that equals 25.
* $5 \times 5 = 25$
* So, $\sqrt{25} = 5$.
9.
$\sqrt{144}$: We need a number times itself that equals 144.
* $11 \times 11 = 121$ (too small)
* $12 \times 12 = 144$ (correct)
* So, $\sqrt{144} = 12$.
10.
$\sqrt{9}$: We need a number times itself that equals 9.
* $3 \times 3 = 9$
* So, $\sqrt{9} = 3$.
11.
$\sqrt{36}$: We need a number times itself that equals 36.
* $6 \times 6 = 36$
* So, $\sqrt{36} = 6$.
12.
$\sqrt{64}$: We need a number times itself that equals 64.
* $8 \times 8 = 64$
* So, $\sqrt{64} = 8$.
Final Answer:
$\sqrt{121} = 11$
$\sqrt{16} = 4$
$\sqrt{81} = 9$
$\sqrt{1} = 1$
$\sqrt{4} = 2$
$\sqrt{49} = 7$
$\sqrt{100} = 10$
$\sqrt{25} = 5$
$\sqrt{144} = 12$
$\sqrt{9} = 3$
$\sqrt{36} = 6$
$\sqrt{64} = 8$
Parent Tip: Review the logic above to help your child master the concept of squares and square roots worksheet.
