Chapter 4: Cubes and Cube Roots Exercise – 4.5

Question: 1

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

7

Solution:

Because 7 lies between 1 and 100, we will look at the row containing 7 in the column of x.

By the cube root table, we have:

Thus, the answer is 1.913.

Question: 2

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

70

Solution:

Because 70 lies between 1 and 100, we will look at the row containing 70 in the column of x.

By the cube root table, we have:

Thus, the answer is 4.121

Question: 3

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

700

Solution:

We have:

Question: 4

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

7000

Solution:

We have:

Question: 5

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

1100

Solution:

We have:

Question: 6

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

780

Solution:

We have:

Question: 7

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

7800

Solution:

Question: 8

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

1346

Solution:

By prime factorisation, we have:

Question: 9

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

940

Solution:

We have:

Question: 10

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

5112

Solution:

We have:

Question: 11

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

9800

Solution:

We have:

Question: 12

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

732

Solution:

We have:

Question: 13

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

7342

Solution:

We have:

Question: 14

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

133100

Solution:

We have:

Question: 15

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

37800

Solution:

We have:

Question: 16

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

0.27

Solution:

Question: 17

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

8.6

Solution:

Question: 18

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

0.86

Solution:

Question: 19

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

8.65

Solution:

Question: 20

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

7532

Solution:

We have, 7532

Question: 21

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

833

Solution:

We have, 833

Question: 22

Making use of the cube root table, find the table, find the cube roots (correct to three decimal points)

34.2

Solution: