plz explain how to figure out decimals and round off numbers.
what is the formula?
http://www.aaamath.com/dec.html
http://www.aaamath.com/est27a-rounding.html
THANK YOU SUE FOR YOUR HELP AND WITH THE WEBSITES.
AVIE
To figure out decimals and round off numbers, you need to understand the concept of place value. Every digit in a number has a specific place value, which determines its significance and position in relation to other digits.
Here is how to figure out decimals and round off numbers:
1. Identify the place value: Start from the leftmost digit and assign place values. For example, in the number 123.45, the digit 1 is in the hundreds place, digit 2 is in the tens place, digit 3 is in the ones place, digit 4 is in the tenths place, and digit 5 is in the hundredths place.
2. Determine the desired level of precision: Decide how many decimal places you want to round off to. For example, if you want to round off to the tenths place, you would have one decimal place after the decimal point.
3. Look at the digit to the right of the desired decimal place: Check the digit in the next decimal place after the desired level of precision. If it is 5 or greater, you round up the digit in the desired decimal place. If it is 4 or less, you leave the digit in the desired decimal place as it is.
4. Adjust other digits as necessary: If you round up a digit, increase the digit in the desired decimal place by 1. This may cause a carry-over or adjustment in other digits. Carry over adjustment is performed in the same way as rounding off in whole numbers.
5. Remove or replace the digits after the desired level of precision: After rounding off, remove or replace the digits after the desired decimal place with zeros.
The formula for rounding off a decimal number to a desired level of precision is:
Step 1: Identify the place value.
Step 2: Look at the digit to the right of the desired decimal place.
Step 3: If the digit is 5 or greater, round up the digit in the desired decimal place.
Step 4: Adjust other digits as necessary.
Step 5: Remove or replace the digits after the desired decimal place with zeros.
Remember to always check the specific rounding rules or guidelines given for the context you are working with, as there may be variations in different situations.