100
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.
It can be rounded to 99 or 98.6
100
You look at the figure in the hundreds position. As it is a 7, then the figure will be rounded up to 85000.
1.66
90
99 symetragonialy
1,246 rounded to one significant figure is 1,000
6694 rounded to 1 significant figure is 7000
541713 rounded to one significant figure is 500000.
828 rounded to one significant figure is 800
470 rounded to one significant figure is 500