76.51 rounded to 1 significant figures would be 77
0.036 The significant figures are indicated by the square brackets 0.0[35550], so we round this part of the figure.
72 is 72.2 rounded to two significant figures.
0.004560 to two significant figures results in: 0.0046
8468 rounded to 2 significant figures is 8500
1.0
3800000
It is 640.
Just cut off the numbers at the eight: 48,000,000
72.8 round to two is 73.
2.6
93
If you are rounding off to two significant figures the result is 33.Sixes always round up to the next higher digit i.e.296 to two significant figures is 30 *101