# McGraw Hill Math Grade 7 Lesson 16.2 Answer Key Square Roots

Exercises

CALCULATE

Identify the square root.

Question 1.
$$\sqrt{36}$$ ______________
$$\sqrt{36}$$ = 6
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{36}$$ is equal to 6 because 6 x 6 is equal to 36.

Question 2.
$$\sqrt{144}$$ ______________
$$\sqrt{144}$$ = 12
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{144}$$ is equal to 12 because 12 x 12 is equal to 144.

Question 3.
$$\sqrt{81}$$ ______________
$$\sqrt{81}$$ = 9
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{81}$$ is equal to 9 because 9 x 9 is equal to 81.

Question 4.
$$\sqrt{25}$$ ______________
$$\sqrt{25}$$ = 5
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{25}$$ is equal to 5 because 5 x 5 is equal to 25.

Question 5.
$$\sqrt{169}$$ ______________
$$\sqrt{169}$$ = 13
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{169}$$ is equal to 13 because 13 x 13 is equal to 169.

Question 6.
$$\sqrt{9}$$ ______________
$$\sqrt{9}$$ = 3
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{9}$$ is equal to 3 because 3 x 3 is equal to 9.

Question 7.
$$\sqrt{1}$$ ______________
$$\sqrt{1}$$ = 1
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{1}$$ is equal to 1 because 1 x 1 is equal to 1.

Question 8.
$$\sqrt{49}$$ ______________
$$\sqrt{49}$$ = 7
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{49}$$ is equal to 7 because 7 x 7 is equal to 49.

Question 9.
$$\sqrt{4}$$ ______________
$$\sqrt{4}$$ = 2
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{4}$$ is equal to 2 because 2 x 2 is equal to 4.

Question 10.
$$\sqrt{100}$$ ______________
$$\sqrt{100}$$ = 10
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{100}$$ is equal to 10 because 10 x 10 is equal to 100.

Question 11.
$$\sqrt{16}$$ ______________
$$\sqrt{16}$$ = 4
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{16}$$ is equal to 4 because 4 x 4 is equal to 16.

Question 12.
$$\sqrt{121}$$ ______________
$$\sqrt{121}$$ = 11
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{121}$$ is equal to 11 because 11 x 11 is equal to 121.

Question 13.
$$\sqrt{64}$$ ______________
$$\sqrt{64}$$ = 8
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{64}$$ is equal to 8 because 8 x 8 is equal to 64.

Question 14.
$$\sqrt{225}$$ ______________
$$\sqrt{225}$$ = 15
Explanation:
The square root of a number is the number that, when multiplied by itself is equal to that number. The $$\sqrt{225}$$ is equal to 15 because 15 x 15 is equal to 225.

Estimate.

Question 15.
$$\sqrt{12}$$ is between ___________ and __________
$$\sqrt{12}$$ is between 3 and 4
The square root of a number is the number that, when multiplied by itself is equal to that number. We know that 3 x 3 = 9 and 4 x 4 = 16. The $$\sqrt{12}$$ is in between 3 and 4.
$$\sqrt{41}$$ is between ___________ and __________
$$\sqrt{41}$$ is between 6 and 7
The square root of a number is the number that, when multiplied by itself is equal to that number. We know that 6 x 6 = 36 and 7 x 7 = 49. The $$\sqrt{41}$$ is in between 6 and 7.