8.4 x 106
Basically, since this is all on the left side of the decimal point, you take the first 2 digits, round them (need to look at the 3rd digit '9' for rounding), then you set the 10n exponent , where n is the number of decimal places it takes to get from the shortened number to the original number (rounded)
272.0 rounds to 270
It is: 3.4 because .01 is less than .05
Any measurement may have two significant digits.
When using significant digits, the product has only the number of significant digits as the lowest number in the factors. "20" has two significant digits and "310" has three. Therefore, the product has to have two significant digits. 310 × 20 = 6200 6200 already has two significant digits.
For a quick estimate, you would usually round to one, sometimes to two, significant digits. One significant digit means discarding all digits after the first, i.e., converting them to zero (and rounding the remaining digit up or down as appropriate).
272.0 rounds to 270
1.0 x 10^4
It has two significant digits.
No, it has 3 significant digits.
It is: 3.4 because .01 is less than .05
Any measurement may have two significant digits.
You can just round it off. For example, if your number is 8.38572998472654400131... that is equal to approximately 8.4 (if two significant digits is enough for your purposes) or 8.39 (if you prefer 3 significant digits).
When using significant digits, the product has only the number of significant digits as the lowest number in the factors. "20" has two significant digits and "310" has three. Therefore, the product has to have two significant digits. 310 × 20 = 6200 6200 already has two significant digits.
1) Look at the two numbers you are multiplying 2) Find both their number of significant digits 3) Multiply both numbers together normally 4) Round your answer to the same number of significant digits of the least number in the first two factors 250 x 185 250 had 2 sig. digits------ 185 has 3 sig. digits 250 has the least number of sig. digits (2) Final answer has to have 2 sig. digits Normal answer: 46250 With rounding of sig. digits: 46000
There are two significant digits in the number 83.
Two. All nonzero digits are significant.
Two significant digits, the 7 and trailing 0.