It is 4.486
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". As the answer only requires 2 significant figure then the first figure to be discarded is the units digit of 1. As this is not 5 or more then the previous figure (5) remains unchanged. 151.208 to 2 sf = 150 NOTE : Zeros are kept to show the position of the decimal point or to indicate that zero is a significant figure.
An estimate is an educated guess. Approximate and round off mean "about".
first round off the two numbers you are dividing to the nearest one. For example 9.5/1.5, round it off to 10/2 which will equal to 5.
1.0e6
The answer depends on the extent to which the number is being rounded.
0.04
0.04
946000
what is the round off of 124.36?
700 or 650.8
9000
0.036 The significant figures are indicated by the square brackets 0.0[35550], so we round this part of the figure.
0.00584 rounded off to 1 significant figure is 0.006
30,569 rounded off to 1 significant figure is 30,000
That depends to what number of figures you are rounding to. Rounded to one significant figure, 361 is approximately equal to 400. Rounded to two significant figures, this is equal to 360.
It depends on how many significant digits you want to round it off to.
Two rules associated with significant figure :-. When rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". Zeros must be kept to show the position of the decimal point or to indicate that zero is a significant figure. Then 0.000 must be kept to show the position of the decimal point. 763 are thus the three significant figures and no change is required as the first figure to be discarded is 2 and this is less than 5. The answer to 3 significant figures is 0.000763