0.06 beginning zeros are not significant
It's already there.
To round 115 to two significant figures, you first identify the two most significant digits, which are 1 and 1. The third digit, 5, is the deciding factor for rounding. Since 5 is equal to or greater than 5, you round up the last significant digit. Therefore, 115 rounded to two significant figures is 120.
To express 124.683 with one significant digit, we round it to the nearest ten. The first significant digit is '1' in the hundreds place, so we round 124.683 to 100.
7000
2,000,000
9000
0.1
It is 4000.
It is 0.01
10000000
0.9
round to the first significant figure