1.4 * 10^10 or alternatively 1.4e10.
To write a number to two significant figures, identify the first two non-zero digits from the left. If there are more digits following these two, round the second digit based on the value of the next digit. For example, for the number 0.00456, the first two significant figures are 4 and 5, so it would be written as 0.0046 when rounded to two significant figures.
42 has two significant figures.
23.43 rounded to two significant figures is 23.
687 to two significant figures is 690.
Rounded to two significant figures it becomes 1.0e4
132.7495 in two significant figures is 130.
0.081778 to two significant figures is 0.082
0.089
2,000,300,000
6,592,000,000
9,000,852,000
9,063,002,000
2,500,003,005
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
7.428571429 significant figures as needed
There are two significant figures which are the two 2s.
all the zeros are significant. there are four significant figures.