round it off to the first 2 numbers
•439,264 km
•15million degrees celcius
•1.00794 atomic mass unit
•140pm
•14.00674 atomis mass unit
I believe you mean, round it off to "two significant digits"
439,264 km = appr 440,000 km
etc
yeah 2 signifacant digints sorry btw anyway thanks!
To round off numbers to the first two digits, follow these steps:
1. Identify the first two digits of the number you want to round off.
2. Look at the digit just to the right of the second digit. Depending on its value, you will determine if you need to round up or round down.
3. If the digit just to the right of the second digit is 0, 1, 2, 3, or 4, you round down by simply dropping all the digits after the second one.
4. If the digit just to the right of the second digit is 5, 6, 7, 8, or 9, you round up the second digit by increasing it by one and dropping all the digits after the second one.
Now let's apply these steps to the numbers you provided:
1. 439,264 km:
- The first two digits are 43.
- The digit just to the right is 9, which is greater than 5.
- Therefore, you round up the second digit, resulting in 44,000 km.
2. 15 million degrees Celsius:
- The first two digits are 15.
- The digit just to the right is 0, which is less than 5.
- Therefore, you round down the second digit, resulting in 15,000,000 degrees Celsius.
3. 1.00794 atomic mass unit:
- The first two digits are 1 and 00.
- The digit just to the right is 7, which is greater than 5.
- Therefore, you round up the second digit, resulting in 1.01 atomic mass unit.
4. 140 pm:
- The first two digits are 1 and 4.
- The digit just to the right is 0, which is less than 5.
- Therefore, you round down the second digit, resulting in 140 pm.
5. 14.00674 atomic mass unit:
- The first two digits are 14 and 00.
- The digit just to the right is 6, which is greater than 5.
- Therefore, you round up the second digit, resulting in 14.01 atomic mass unit.
By following these steps, you can round off any number to the first two digits.