Question

Help please!!
How do you know when a number is limited to two or three significant digits when rounding it off ???

Answer 1

What were the original numbers you were working with?

Answer 2

50.5cmx12cm and 103.37g/20.5ml

Answer 3

For multiplication/division problems, the final answer will have as many sigfigs as the number in the problem with the least amount of sigfigs.

Answer 4

for the first problem, you will use 2 sigfigs because 12 has 2. in the next problem, you will use 3 sigfigs because 20.5 has 3

Answer 5

And for future reference, in addition/subtraction problems, you go by the number of sigfigs after the decimal point

Answer 6

is that actual measurements or they were just given to you? because if you were the one that measured stuff, your significant figures are messed up.

Answer 7

@joe.a.23 what if you didn't have decimal point for addition or subtraction? that's a misleading rule. you always go for the first "guess" column.

Answer 8

Yes I was looking for my book so I could give a better explanation. Thanks for clearing that up

Answer 9

they were given to me and thank you @joe.a.23