Work out 3/10 of 18. Write your answer as a decimal.
Understand the Problem
The question is asking to calculate three tenths of eighteen and present the answer in decimal form. The method involves multiplying 18 by the fraction 3/10.
Answer
The answer is $5.4$.
Answer for screen readers
The answer is $5.4$.
Steps to Solve
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Identify the calculation We need to find $ \frac{3}{10} $ of 18.
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Set up the equation To do this, we multiply 18 by $ \frac{3}{10} $. The equation is: $$ 18 \times \frac{3}{10} $$
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Perform the multiplication First, multiply 18 by 3: $$ 18 \times 3 = 54 $$
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Divide by the denominator Now divide the result by 10: $$ \frac{54}{10} = 5.4 $$
The answer is $5.4$.
More Information
This calculation shows that three tenths of eighteen is 5.4, which can also be understood as taking a portion of 18 based on the fraction provided. The decimal form helps in understanding the size of the fraction in a clearer manner.
Tips
- Forgetting the multiplication: Some may forget to multiply before dividing by 10, leading to incorrect results. Always follow the order of operations.
- Confusion with fractions: Mistaking the fraction format could lead to errors, so ensure proper interpretation before calculating.
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