Question

A ruler has markings as shown below. Stefan uses this ruler to measure the length of a metal rod. How many decimal places should his answer include?

Answer 1

Based on a ruler in centimeters, with ten divisions between each centimer mark, you will have marks at every 0.1 cm.


Then, the measure of the length of a metal rod should have 1 decimal place.


That decimal place means mlimiters, given that 1 mm = 0.1 cm.


Answer: 1 decimal place

Answer 2

Answer:

Based on a ruler in centimeters, with ten divisions between each centimer mark, you will have marks at every 0.01 mm.

Then, the measure of the length of a metal rod should have 1 decimal place.

That decimal place means mlimiters, given that 1 mm = 0.1 cm.

Answer: 2 decimal place