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.
The answer depends on the extent to which the number is being rounded.
1.0e6
946000
0.04
0.04
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.
To round off the number 408.9 to one significant figure (sf), you look at the first non-zero digit, which is 4. The next digit is 0, which does not round the 4 up, so the rounded number is 400. Therefore, 408.9 rounded to one significant figure is 400.
30,569 rounded off to 1 significant figure is 30,000
0.00584 rounded off to 1 significant figure is 0.006
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.