Page 261 - Chemistry eBook

Significant Digits
• All numbers between 1 and 9 are significant digits.
354,984 has 6 significant digits.
• Zeros between significant digits are significant.
5005 has 4 significant digits.
• Start counting from the first non-zero number.
.005 has 1 significant digit.
• If there’s no decimal point, zeros at the end do not count as significant digits.
2500 has 2 significant digits.
• If there is a decimal point, zeros at the end do count as significant digits.
.2500 has 4 significant digits.
UNIT 6: MATH IN CHEMISTRY © 260