1,040 to 3 s.f., or 1,040 (3 s.f.) or 1,040.
There are 4 significant digits
There are seven (7) significant digits in 4032010.
5 significant figures.
Five
111.009 rounded to four significant digits is 111.0
111.0
1.0e3L
1042L rounded off to two significant digits is 1000L. The digit "1" in the hundreds place is the most significant digit, so the number is rounded down to 1000L.
686.88 rounded to 3 significant digits is 687
2,340,567 rounded to five significant digits is 2,340,600
009999991 rounded to 2 significant digits is 1.0e7
1.239 rounded to 3 significant digits is 1.24
2711 rounded to 2 significant digits is 2700
323.565 rounded to three significant digits is 323.56
Significant digits in measurement refer to the digits in a number that carry meaning or contribute to the precision of the measurement. They indicate the level of certainty in a measurement and help determine the accuracy of the result. The more significant digits in a measurement, the more precise the measurement is considered to be.
1,040 to 3 s.f., or 1,040 (3 s.f.) or 1,040.