Practice the questions of **McGraw Hill Math Grade 8 Answer Key PDF Lesson 10.4 Squares and Square Roots **to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 8 Answer Key Lesson 10.4 Squares and Square Roots

**Exercises**

**CALCULATE**

**Identify the square root.**

Question 1.

\(\sqrt{49}\)

Answer:

7

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{49}\) = 7 x 7 = 49

S0, 7^{2Â }= 49

Question 2.

\(\sqrt{121}\)

Answer:

11

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{121}\) = 11 x 11 = 121

S0, 11^{2Â }= 121

Question 3.

\(\sqrt{225}\)

Answer:

15

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{225}\) = 15 x 15 = 225

S0, 15^{2Â }= 225

Question 4.

\(\sqrt{81}\)

Answer:

9

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{81}\) = 9 x 9 = 81

S0, 9^{2Â }= 81

Question 5.

\(\sqrt{144}\)

Answer:

12

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{49}\) = 12 x 12 = 144

S0, 12^{2Â }= 144

Question 6.

\(\sqrt{4}\)

Answer:

2

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{4}\) = 2 x 2 = 4

S0, 2^{2Â }= 4

Question 7.

\(\sqrt{1}\)

Answer:

1

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{1}\) = 1 x 1 = 1

S0, 1^{2Â }= 1

Question 8.

\(\sqrt{169}\)

Answer:

13

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{169}\) = 13 x 13 = 169

S0, 13^{2Â }= 169

Question 9.

\(\sqrt{16}\)

Answer:

4

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{16}\) = 4 x 4 = 16

S0, 4^{2Â }= 16

Question 10.

\(\sqrt{36}\)

Answer:

6

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{36}\) = 6 x 6 = 36

S0, 6^{2Â }= 36

Question 11.

\(\sqrt{100}\)

Answer:

10

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{100}\) = 10 x 10 = 100

S0, 10^{2Â }= 100

Question 12.

\(\sqrt{64}\)

Answer:

8

Explanation:

Square root of a number is a number, when multiplied by itself is equal to that number.

\(\sqrt{64}\) = 8 x 8 = 64

S0, 8^{2Â }= 64

**Square these numbers.**

Question 13.

1^{2}

Answer:

1

Explanation:

Square a number means multiplying the number by itself.

1^{2}= 1 x 1 = 1

Question 14.

2^{2}

Answer:

4

Explanation:

Square a number means multiplying the number by itself.

2^{2}= 2 x 2 = 4

Question 15.

3^{2}

Answer:

9

Explanation:

Square a number means multiplying the number by itself.

3^{2}= 3 x 3 = 9

Question 16.

4^{2}

Answer:

16

Explanation:

Square a number means multiplying the number by itself.

4^{2}= 4 x 4 = 16

Question 17.

5^{2}

Answer:

25

Explanation:

Square a number means multiplying the number by itself.

5^{2}= 5 x 5 = 25

Question 18.

6^{2}

Answer:

36

Explanation:

Square a number means multiplying the number by itself.

6^{2}= 6 x 6 = 36

Question 19.

7^{2}

Answer:

49

Explanation:

Square a number means multiplying the number by itself.

7^{2}= 7 x 7 = 49

Question 20.

8^{2}

Answer:

64

Explanation:

Square a number means multiplying the number by itself.

8^{2}= 8 x 8 = 64

Question 21.

9^{2}

Answer:

81

Explanation:

Square a number means multiplying the number by itself.

9^{2}= 9 x 9 = 81

Question 22.

10^{2}

Answer:

100

Explanation:

Square a number means multiplying the number by itself.

10^{2}= 10 x 10 = 100

Question 23.

11^{2}

Answer:

121

Explanation:

Square a number means multiplying the number by itself.

11^{2}= 11 x 11 = 121

Question 24.

12^{2}

Answer:

144

Explanation:

Square a number means multiplying the number by itself.

12^{2}= 12 x 12 = 144