Math and Arithmetic

Chemistry

# How many significant figures do 1.001 and 1.000 possess?

###### Wiki User

###### 2007-05-15 20:40:26

The two numbers mentioned in the question have four significant

figures (often called significant digits). If you wish to check

your knowledge of sig-digs, check out the following link:

http://science.widener.edu/svb/tutorial/sigfigures.html

## Related Questions

###### Asked in Calendar

### What century is 1001 BC in?

###### Asked in Math and Arithmetic

### How many significant digits in 1001?

4.
The idea of "SigFigs" is that "is the number rounded off?" If
someone says that there are 1000 ounces in a bucket, you can figure
that they could be rounding off to the nearest hundred, or even to
the nearest thousand (it could be 700 and just look like 1000.) If
they say there are 1001, you have more confidence that they are
exact to all 4 digits.
1001 is not going to be a round-off of anything short of being
rounded to the nearest unit, so all digits from the unit going left
are significant.
Follow this rule. Going from the decimal point to the left, any
zeros are NOT significant until you hit a non-zero. In this case,
the first number you hit going left is the 1, so all digits are
significant.
Note, any zeroes to the right of a decimal are all significant,
since 25.00 gives more information than just 25. ■

###### Asked in Numbers

### Find the sum of the integers 1 to 1000?

This kind of question is frequently asked and easily solved. 1 +
1000 = 1001 2 + 999 = 1001 3 + 998 = 1001 You can see the
developing pattern here. Taking integers in order from the top and
bottom of the list allows you to create hundreds of equal sums. The
last such sum that can be made is 500 + 5001 = 1001. It is clear
that you then have 500 sums, each equal to 1001. 1001 X 500 =
500,500 which is the sum of all the integers combined.