SIG FIG Rules
All non-zero digits are ____.
significant
True or False: When collecting data in a lab, each number should have the same number of significant figures.
True
How many significant figures does this number have?
0.31
2
32.12 - 26.5 = ?
5.6
58.34 - 0.327 = ?
58.01
Zeroes between 2 nonzero digits are _____.
significant
True or false: 0.978 has 3 significant figures.
true
How many significant figures does this number have?
2.60
3
10.51 x 2.23 = ?
23.4
5.9 + 2.41 = ?
8.3
Leading zeroes are _____.
not significant
True or false: 780.091 has 5 significant figures.
False, it has 6 significant figures figures.
How many significant figures does this number have?
0.076
2
25.6 x 3.2
8.2 x 10^1
126.59 + 0.4027 = ?
127.0
Trailing zeroes before an implied decimal point are _____
ambiguous
True or False: When adding or subtracting, you use the number with the least amount of significant figures to determine how many significant figures the answer has.
False, you would use the least number of decimal places.
How many significant figures does this number have?
0.0001032
4
84.6
2.85 / 5.1 - 1.325 + 1.1 = ?
0.3
Trailing zeroes are always significant in numbers that have decimal points. If the number does not have a decimal point, the number is ambiguous.
True or false: When multiplying or dividing, you use the number with the least amount of decimal places to determine how many significant figures the answer has.
False, you would use the number of significant figures.
How many significant figures does this number have?
0.00120003409
9
(67.91 - 56.34 / 3.21) + (33.6 x 2.1) = ?
1.2 x 10^2
123.58 - 68.9 + 0.3 - (2.5 x 0.56) = ?
53.6