EVERYDAY SCIENCE

Detailed explanation-1: -figs. Rounding 1, 000, 000 to 3 sig. figs. 100 to 2 sig.

Detailed explanation-2: -For example, “100, 000.” would indicate 6 sig figs.

Detailed explanation-3: -The number “10.” is said to have two significant digits, or significant figures, the 1 and the 0. The number 1.0 also has two significant digits. So does the number 130, but 10 and 100 only have one “sig fig” as written. Zeros that only hold places are not considered to be significant.

Detailed explanation-4: -However, both 10 and 1000 have only 1 sig fig. The reason is because the zeros have to be there to show what the number is, so they don’t count as significant digits.