Rounding 7.87 mL to the Nearest Tenth: A Simple Guide
Rounding numbers is a fundamental mathematical skill often used in everyday life, whether in measurements, budgeting, or estimations. In this article, we’ll explore how to round 7.87 mL to the nearest tenth step by step.
What Does “Nearest Tenth” Mean?
The nearest tenth refers to the first decimal place in a number. For example, in the number 7.87, the “tenths” place is 8 (the first digit after the decimal point), while the “hundredths” place is 7 (the second digit after the decimal point).
Steps to Round 7.87 to the Nearest Tenth:
- Identify the Tenths and Hundredths Places:
- Tenths place: 8
- Hundredths place: 7
- Check the Rule for Rounding:
- If the digit in the hundredths place is 5 or higher, round the tenths place up by 1.
- If the digit in the hundredths place is 4 or lower, leave the tenths place as it is.
- Apply the Rule:
- In 7.87, the digit in the hundredths place is 7, which is greater than 5.
- Therefore, we round the tenths place (8) up by 1.
- Write the Rounded Number:
- The tenths place becomes 9, and the result is 7.9.
Final Answer:
When rounded to the nearest tenth, 7.87 mL becomes 7.9 mL.
Why Is Rounding Important?
Rounding helps simplify numbers, making them easier to use in practical situations. For example, in science or cooking, approximate measurements like 7.9 mL can save time while remaining accurate enough for most purposes.
Quick Tip:
Always remember to check the digit immediately after the place you’re rounding to—it determines whether you round up or leave the number as it is.
