Question

When asked to find a number one-tenth as large as another number, what operation would you use? What about when asked to find a number 10 times as large?

Answer 1

Apply division by 10 when one tenth of a number is required and apply multiplication by 10 when 10 times of a number is required.

Solution:

Need to determine what operation is required to get one-tenth of a number and 10 times of a number

To get one tenth of a number, divide the number by 10.

For example to get one – tenth of 100, divide it by 10, we get 10 as a result.

$\frac{1}{10} \times 100 = 10$

To get ten times of a number, multiply the number by 10

For example 10 times of 10 = 10 x 10 = 100

Hence apply division by 10 when one tenth of a number is required and apply multiplication by 10 when 10 times of a number is required.