It depends on what a 'reasonable estimator' is. A good estimator is usually one which is considered unbiased. That is
Expected value of the estimator = E[x] = the answer
In your case, the E[x] = 500 but the answer is actually 490. This represents a 2% margin of error. Since it's a pretty simple computation, I personally think that error is not reasonable.
4,33
Take 80% of 500 and you get 400
500/10 = 50
520 + 290 = 810
The 2 numbers that total 500 and are different by 156 are 328 and 172.
330 + 170 = 500
It is 51.8%. You get it in this way: (259/500) * 100. I.e., 0.518 * 100 =51.8.
500 million times 259 billion equals 129,500,000,000,000,000,000 (129.5 quintillion).
259/500
518/1000 simplified is 259/500
8 and 518/1000 or 8 and 259/500
Yes, 518/1000 simplifies to 259/500.
The answer depends on many conditions. 420 to 500 miles would be a reasonable estimate for a fully loaded van on the highway.
800 - 300 = 500
500
It's about half of it, a little more than half.
9.7 - 3.5 = 6.2