Question

When are zeros always always significant?

Answer 1

Any zeros between two significant digits are significant.

Step-by-step explanation:

• In scientific experiments, all numbers are obtained from measurements.Not all measurements are certain, so we have to use only the numbers that are significant.
• So, we need significant numbers to help us decide how many digits should be included in a number so that it is significant.
• These three rules help us decide the significant digits in a number:

1. The non zero digits will always be significant
2. The zeroes in midst of two non zero digits is significant
3. Trailing zeros after decimal are only significant