Question

Adriel knows that 1/5 written as a decimal is 0.2. How can he use this information to find the decimal form of 9/5 without dividing 9 by 5?

a. 0.9
b. 1.8
c. 1.2
d. 2.7

Answer 1

To find the decimal form of 9/5, multiply the decimal equivalent of 1/5, which is 0.2, by 9 to get 1.8.

Step-by-step explanation:

Knowing that 1/5 is equal to 0.2, finding the decimal form of 9/5 can be done by multiplying 0.2 by 9.

Since 0.2 represents one-fifth, multiplying this by 9 will give us nine-fifths.

Therefore, 0.2 × 9 = 1.8, which is the decimal form of 9/5.