Question

how many significant digits does this number have? -0.050

Explanation:

Step1: Recall significant - digit rules

Leading zeros are not significant. Trailing zeros after a decimal point are significant.

Step2: Analyze - 0.050

The leading zeros (before the 5) are not significant. The 5 and the 0 after it are significant. So there are 2 significant digits.

Answer:

2