Question about Scientific Explorer My First Chemistry Kit

There are 4 sig figs (sfs) in 3.414.

Also,

- 4 sfs in 10.02
- 5 sfs in 58.325
- 2 sfs in 0.00098

The rule I use is the

I know it seems weird, but it is a very powerful rule, always reliable!

If the number has a dot in it (that is, if it has a decimal in it), imagine an arrow swooshing from left to right through the number. Start counting sig figs as soon as the imaginary arrow strikes a non-zero digit. Every digit the arrow goes through after it hits that first non-zero digit, is a significant digit (sig fig). The total number of sig figs is the sum of the first non-zero digit + all the following digits the arrow goes through after that. Very simple, right?

As an example, in 0.00098, the arrow sweeps through the leading zeros without counting until it stikes the first nonzero digit, 9. (BONK!!) So you must count it and the following digit (8). So the total number of sfs is only 2 for this number. Try it on the other numbers for practice.

The "no-dot left arrow" rule. You can use this rule when a number does

To apply the

Suggestion: Google up "sig figs" and get some more examples of quantities to practice counting sig figs. Also pay attention to the important related topic of proper rounding off of calculated quantities which have different numbers of sig figs. You will find this skill invaluable when you take a lab based chemistry or physics course!

Good luck!

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Posted on Jan 05, 2011

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Posted on Jan 02, 2017

The answer is 9444000. This is an exact answer, not rounded up or down, so it has 7 significant figures. Since rounding introduces ambiguity, an exact answer like this is sometimes written with a decimal, 9444000.0, so it is known to have 7 significant figures.

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Aug 18, 2015 | Toys

Each number has 4 significant digits. The product has 4 significant figures too.

Aug 18, 2015 | Office Equipment & Supplies

Ambiguous case. 200 could have just one or 3. Check with your teacher what is meant here. If all figures are significant in 200, then your product will also have 3 sig fig: product=25400=2.54x10^4.

However if there is only one significant digit meant in 200, the result should rounded up to 30 000=3x10^4

However if there is only one significant digit meant in 200, the result should rounded up to 30 000=3x10^4

Aug 18, 2015 | Office Equipment & Supplies

That is not something that can be done by calculator. Do all the operations to get a result. Look at the number of significant figures in each number in the chain of operations. Keep the least number of significant figures. The result of a calculation cannot be more precise than the least precise of its components.

Sep 02, 2014 | Casio fx-300ES Calculator

One for certain, the other four may or may not be significant.

May 16, 2014 | Cell Phones

Since 1.2 only has two significant digits, you could consider the sum to have only two significant digits as well. Rounded to two digits, the sum is 6.0 .

Sep 13, 2013 | Office Equipment & Supplies

Press SHIFT MODE 6 then select the desired number of digits after the decimal point. Alternatively, press SHIFT MODE 7 then select the desired number of significant digits.

Sep 09, 2013 | Casio FX-115ES Scientific Calculator

it should...

it can be found by SHIFT then MODE then SCI is the one you want to choose

it can be found by SHIFT then MODE then SCI is the one you want to choose

Jan 07, 2010 | Casio FX-300MS Calculator

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