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An irrational number is a number that cannot be fully written down into a simple whole number or a fraction. Rather it is written in decimal form but it has an infinite number of digits that extend to the right of the decimal point.

One well known irrational number is **pi**.

1.

√13

3.5691

3.5698

3.6055

3.6132

The square root of 13 is 3.6055513. Cutting off with the fourth digit to the right of the decimal point we are left with 3.6055. Answer (c) is the correct answer

2.

√123

10.9868

11.0905

11.0975

11.1543

The square root of 123 is 11.0905365. Cutting off with the fourth digit to the right of the decimal point we are left with 11.0905. Answer (b) is the correct answer

3.

√55

7.0987

7.3659

7.4161

7.5243

The square root of 55 is 7.4161985. Cutting off with the fourth digit to the right of the decimal point we are left with 7.4161. Answer (c) is the correct answer

4.

√17

3.9879

4.1231

4.0578

4.1369

The square root of 17 is 4.1231056. Cutting off with the fourth digit to the right of the decimal point we are left with 4.1231. Answer (b) is the correct answer

5.

√29

5.3851

5.3794

5.3785

5.3697

The square root of 29 is 5.3851648. Cutting off with the fourth digit to the right of the decimal point we are left with 5.3851. Answer (a) is the correct answer

6.

√11

3.3212

3.5000

3.3166

3.3498

The square root of 11 is 3.3166248. Cutting off with the fourth digit to the right of the decimal point we are left with 3.3166. Answer (c) is the correct answer

7.

√33

5.7283

5.7297

5.7364

5.7445

The square root of 33 is 5.7445626. Cutting off with the fourth digit to the right of the decimal point we are left with 5.7445. Answer (d) is the correct answer

8.

√47

6.7496

6.7543

6.7579

6.8556

The square root of 47 is 6.8556546. Cutting off with the fourth digit to the right of the decimal point we are left with 6.8556. Answer (d) is the correct answer

9.

√3

1.7320

1.7445

1.7493

1.7501

The square root of 3 is 1.7320508. Cutting off with the fourth digit to the right of the decimal point we are left with 1.7320. Answer (a) is the correct answer

10.

√21

4.5815

4.5825

4.5835

4.5845

The square root of 21 is 4.5825757. Cutting off with the fourth digit to the right of the decimal point we are left with 4.5825. Answer (b) is the correct answer

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