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

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.
$$\sqrt{49}$$
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, 72Â = 49

Question 2.
$$\sqrt{121}$$
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, 112Â = 121

Question 3.
$$\sqrt{225}$$
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, 152Â = 225

Question 4.
$$\sqrt{81}$$
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, 92Â = 81

Question 5.
$$\sqrt{144}$$
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, 122Â = 144

Question 6.
$$\sqrt{4}$$
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, 22Â = 4

Question 7.
$$\sqrt{1}$$
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, 12Â = 1

Question 8.
$$\sqrt{169}$$
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, 132Â = 169

Question 9.
$$\sqrt{16}$$
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, 42Â = 16

Question 10.
$$\sqrt{36}$$
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, 62Â = 36

Question 11.
$$\sqrt{100}$$
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, 102Â = 100

Question 12.
$$\sqrt{64}$$
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, 82Â = 64

Square these numbers.

Question 13.
12
1
Explanation:
Square a number means multiplying the number by itself.
12= 1 x 1 = 1

Question 14.
22
4
Explanation:
Square a number means multiplying the number by itself.
22= 2 x 2 = 4

Question 15.
32
9
Explanation:
Square a number means multiplying the number by itself.
32= 3 x 3 = 9

Question 16.
42
16
Explanation:
Square a number means multiplying the number by itself.
42= 4 x 4 = 16

Question 17.
52
25
Explanation:
Square a number means multiplying the number by itself.
52= 5 x 5 = 25

Question 18.
62
36
Explanation:
Square a number means multiplying the number by itself.
62= 6 x 6 = 36

Question 19.
72
49
Explanation:
Square a number means multiplying the number by itself.
72= 7 x 7 = 49

Question 20.
82
64
Explanation:
Square a number means multiplying the number by itself.
82= 8 x 8 = 64

Question 21.
92
81
Explanation:
Square a number means multiplying the number by itself.
92= 9 x 9 = 81

Question 22.
102
100
Explanation:
Square a number means multiplying the number by itself.
102= 10 x 10 = 100

Question 23.
112
121
Explanation:
Square a number means multiplying the number by itself.
112= 11 x 11 = 121

Question 24.
122