Question

how many significant figures in 0.0010​

Answer 1

Zeros that occur between significant digits are significant digits. Zeros to the right of the decimal point and to the right of a non-zero digit are significant. 320 has two significant digits (This zero is to the left of the decimal point - not significant.)

Answer 2

The number of significant figures in 0.0010 is 2

• Significant figures can be identified by counting all the digits starting from the first none zero on the left.
• So counting from the left significant figures in 0.0010 are '1 0'
• Leading zeros (placed before decimal) are not significant.
• Zeros placed after decimal and before a first non-zero number are not significant. so in 0.0010, zeros place after dot and before whole number are not significant.
• Trailing zeroes after decimal and whole number are significant. So, in 0.0010 zero after 1 is significant.
• 10 makes it clear that measurement is equal to four decimal places.

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