It is then 30,000 rounded to 1 significant figure
It is: 4000 rounded to one significant figure
Rounded to 1 significant figure it is 0.4
There is no such thing as a nearest significant figure. For sf (as with decimal places) it is necessary to specify how many. 0.00747 to 1 sf is 0.007, to 2 sf it is 0.0075, to 3 sf it is 0.00747, to 4 sf it is 0.007470 and so on.
7523987 rounded to one significant figure is: 8000000
0009999 = 9999 is closer to 0.5
Rounding a number to the nearest significant figure means rounding it to the nearest digit that indicates the precision of the measurement. This typically involves looking at the significant figures in the number and rounding to the appropriate level of precision. For example, 345.678 rounded to the nearest significant figure would be 300.
9000
0.6
You round to the nearest tens place. In this case, 738 rounded to one significant figure is 700.
The number 46313 rounded to 1 significant figure is 50000. The significant digit is 5, so the number is rounded up to the nearest power of 10.
When expressing a number to one significant figure, you round the number to the nearest power of 10. In this case, 9862 to one significant figure would be 10,000. This is because the first digit from the left is 9, which is closer to 10 than 10000.
I think your question is asking how you would round 17.521 to the nearest number with 1 significant figure...if that's the case, it would round to 10.
It is then 30,000 rounded to 1 significant figure
Put it on a calculator, you get 22.80677966 to the 5th significant figure, it is 22.807
Integers ending in a string of zeros are ambiguous. You cannot tell whether this number is accurate to the nearest hundred million (1 significant figure), to the nearest million (3 sf) or even the nearest unit (9 sf).
37.753 rounded to one significant figure becomes 40