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Hi!
Wow, good question!
In chemistry, an exact number is one that you know is absolutely true. For example, these are exact numbers:
12 inches in a foot
9 roses
1000mg in 1 g
However, a measured number is one that needs significant figures. For example, these are measured numbers:
12.3 g
1001 liters
361.3 miles
These are numbers that you aren't absolutely sure. If you weigh something and it states 3.0 grams, that is NOT an exact number, but rather a measured number. For all you know, the weight may be 3.00000003, but since the weighing scale can only show two digits, you get 3.0 g.
Good luck!
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Is considered a significant digit when it is to the left or the right of the decimal point and it follows a non-zero digit or when it is betwee two digits?
Zero is considered a significant digit when it is to the left or the right of the decimal point. It is also a significant digit when it follows a non-zero digit or when it is between two digits.
What is a Mott number?
A Mott number is when you multiply 5 different prime number together and the product is a 4 digit number that is a Mott number4290 is a Mott number cause 2x3x5x11x13=4290
When writing a number in scientific notation. how many digits should be to the left of a decimal point?
In scientific notation, you should have only one digit to the left of the decimal point.
How do you write 0.0024 in scientific notation?
0.000000025 = 2.5 × 10^-8To convert a number to scientific notation:write out the number starting with the first non-zero digit and continue until the last non-zero digit;put the decimal point after the first digit;count how many digits the decimal point needs to move to get back to where it was originally (if there was no decimal point as the number was a whole number it was "hiding" after the ones-digit, the last digit);if the decimal point need to move left make this count negative;write ×10 to the power of this count after the number written in step 2.→ 0.000000025 = 2.5 × 10^-8
What is 0.5 as scientific notation?
0.5, written in scientific notation is 5 x 10^-1. The first digit of scientific notation is always between 0 and 10. The power of the ten can be thought of as how many 'hops' to the left or right the decimal place has to take to make the original number. A negative number is to the left, a positive is to the right. For instance, 0.001 will be 1 x 10^-3.
What is the difference in value between the largest 6 digit number and the smallest 8 digit number?
what is the difference between the largest 8-digit number and the smallest 6-digit number
What is the difference between greatest 7 digit number and the greatest 8 digit number?
The difference is 90000000
If you need a number between 500and600and your ones digit is 5and your tens digit is the difference between the ones and hundreds digit what number are you?
505
What is the difference between a digit and a number?
A digit is part of a number. the number 23 has two digits 2 and 3.
Find the difference between the largest 8 digit number and the smallest 6 digit number?
It is 99,899,999.
What is the difference between the largest 4 - digit number and the smallest 4 - digit number?
8999 is the precise answer
Find the difference between the largest four-digit number and the smallest four-digit number?
Assuming you do not want a number with leading zeros, the difference is 8999.
What is the difference between the smallest six-digit number and the largest 4-digit?
It is 90001.
What is the difference between the largest 4-digit number and the smallest 6-digit number?
-2
What is the difference between the largest 4 digit number and the smallest 6 digit number?
100000 - 9999 = 90001
What is the difference between the smallest four digit number and the largest two digit number?
10000-99=901
What is the difference between the largest 5 digit number and the smallest 4 digit number?
99999 - 1000 = 98999
