Decimal Place Round off the following numbers accordigly. 1. 43.72 (1 d.p) 2. 0.025 (2 d.p) 3. 5.572 (nearest whole number)
The Correct Answer and Explanation is:
Here’s how to round off the numbers you’ve provided according to the specified decimal places:
- 43.72 rounded to 1 decimal place (1 d.p):
To round to 1 decimal place, we focus on the second digit after the decimal point. If the second digit is 5 or more, we round up the first decimal place. If it’s less than 5, we leave the first decimal place unchanged.- In this case, the second decimal place is 2 (which is less than 5), so we leave the first decimal place unchanged.
- Rounded value: 43.7
- 0.025 rounded to 2 decimal places (2 d.p):
Here, we look at the third digit after the decimal point. If this digit is 5 or more, we round up the second decimal place. If it’s less than 5, we leave the second decimal place as is.- The third decimal place is 5, so we round up the second decimal place from 2 to 3.
- Rounded value: 0.03
- 5.572 rounded to the nearest whole number:
When rounding to the nearest whole number, we focus on the first decimal place. If the first decimal is 5 or more, we round up the whole number. If it’s less than 5, we round down.- The first decimal place is 5, so we round the number up from 5 to 6.
- Rounded value: 6
Explanation:
- For 43.72 to 1 decimal place: Since the second decimal (2) is less than 5, we leave the first decimal (7) unchanged.
- For 0.025 to 2 decimal places: Since the third decimal (5) is exactly 5, we round the second decimal (2) up to 3.
- For 5.572 to the nearest whole number: Since the first decimal (5) is exactly 5, we round the number up to 6.
Rounding numbers is an important skill for approximating values, simplifying calculations, and presenting data in a clear, concise manner.
