there is one significant figure in 001 because 0's only count as significant figures when they are after a whole number and there is a decimal point. ex. there are three sig figs in 100. 1.00 and 10.0
There is one significant figure in the number .001. Leading zeroes, which only serve to indicate the position of the decimal, are never significant.
001 has one significant digit, so the answer can only have one. 1.2 x 001 = 1
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
**If you mean how many ways three 3-digit numbers can add up to 005, the answer depends on whether the order of the numbers matters to you: • There are 21 unique equations if the order matters (e.g., counting 001 + 002 + 002 as different from 002 + 002 + 001). • There are 5 basic combinations if the order does not matter (just looking at the groups of numbers used). Here are the complete lists for both ways of looking at it: The 5 Combinations (Order Doesn't Matter) If you only care about which sets of three numbers can add up to 5, there are exactly 5 combinations: 000 + 000 + 005 = 005 000 + 001 + 004 = 005 000 + 002 + 003 = 005 001 + 001 + 003 = 005 001 + 002 + 002 = 005 (Your example) The 21 Equations (Order Matters) If switching the position of the numbers counts as a new equation, and 000 counts as a 3 digit number those 5 combinations expand into 21 variations: Using 0, 0, and 5: • 000 + 000 + 005 = 005 • 000 + 005 + 000 = 005 • 005 + 000 + 000 = 005 Using 0, 1, and 4: • 000 + 001 + 004 = 005 • 000 + 004 + 001 = 005 • 001 + 000 + 004 = 005 • 001 + 004 + 000 = 005 • 004 + 000 + 001 = 005 • 004 + 001 + 000 = 005 Using 0, 2, and 3: • 000 + 002 + 003 = 005 • 000 + 003 + 002 = 005 • 002 + 000 + 003 = 005 • 002 + 003 + 000 = 005 • 003 + 000 + 002 = 005 • 003 + 002 + 000 = 005 Using 1, 1, and 3: • 001 + 001 + 003 = 005 • 001 + 003 + 001 = 005 • 003 + 001 + 001 = 005 Using 1, 2, and 2: • 001 + 002 + 002 = 005 • 002 + 001 + 002 = 005 • 002 + 002 + 001 = 005** SIMPLY AND DIRECTLY I ORGANIZED NUMBERS LOW TO HIGH. FOR UNDERSTANDING MADE EASY! **If you mean how many ways three 3-digit numbers can add up to 005, the answer depends on whether the order of the numbers matters to you: • There are 21 unique equations if the order matters (e.g., counting 001 + 002 + 002 as different from 002 + 002 + 001). • There are 5 basic combinations if the order does not matter (just looking at the groups of numbers used). Here are the complete lists for both ways of looking at it: The 5 Combinations (Order Doesn't Matter) If you only care about which sets of three numbers can add up to 5, there are exactly 5 combinations: 000 + 000 + 005 = 005 000 + 001 + 004 = 005 000 + 002 + 003 = 005 001 + 001 + 003 = 005 001 + 002 + 002 = 005 (Your example) The 21 Equations (Order Matters) If switching the position of the numbers counts as a new equation, and 000 counts as a 3 digit number those 5 combinations expand into 21 variations: Using 0, 0, and 5: • 000 + 000 + 005 = 005 • 000 + 005 + 000 = 005 • 005 + 000 + 000 = 005 Using 0, 1, and 4: • 000 + 001 + 004 = 005 • 000 + 004 + 001 = 005 • 001 + 000 + 004 = 005 • 001 + 004 + 000 = 005 • 004 + 000 + 001 = 005 • 004 + 001 + 000 = 005 Using 0, 2, and 3: • 000 + 002 + 003 = 005 • 000 + 003 + 002 = 005 • 002 + 000 + 003 = 005 • 002 + 003 + 000 = 005 • 003 + 000 + 002 = 005 • 003 + 002 + 000 = 005 Using 1, 1, and 3: • 001 + 001 + 003 = 005 • 001 + 003 + 001 = 005 • 003 + 001 + 001 = 005 Using 1, 2, and 2: • 001 + 002 + 002 = 005 • 002 + 001 + 002 = 005 • 002 + 002 + 001 = 005**
It is exactly the same.
231.57 has five significant figures/numbers. All the numbers in 231.57 are significant.
+001 plus the remaining numbers
The figure 18.03 has a total of four significant numbers
001, and 999
Left zero's are NOT significant: So it's one in 0.01
None because 001 is the same as 1
Because 10.00400 is 10.004, this has five significant digits (numbers).