1,000 L to 2 s.f., or 1,000 (2 s.f.) or 1,000 L.
500
Just cut off the extra digits: 150
45.0 is the 44.981 to 3 significant figures.
7: 0.00003050=.0000305 The two zeroes on each end can be taken off because taking them off will NOT change the value of the number. * * * * * Not so. None of the zeros before the 3 are significant - they are only place holders. Conversely, the zero after the 5 IS significant. Its presence indicates a precision that is ten times greater. So, the significant digits are 3050 - 4 of them.
Simply cut off the extra digits: 3.
1,040 to 3 s.f., or 1,040 (3 s.f.) or 1,040.
1,000 to 2 s.f., or 1,000 (2 s.f.) or 1,000.
111.009mm rounded to four significant digits is 111.0mm
111.009 rounded to four significant digits is 111.0
222.008 mm rounded to four significant digits is 222.0 mm
14.587020 rounded to four significant digits is 14.59
31500
0.037
16.3
Three. All non-zero digits are significant, all zeroes between other digits, and all digits to the right of the decimal. The reason for this is that if this is rounded off, it apparently is rounded off to the nearest tenth, otherwise the tenth place would not be shown. if it were rounded off to the unit, it would read 39, not 39.0 ■
111.0
111.0