Question

A stack of 7 nickels is 13.65 mm high . What is the height of the stack to the nearest tenth of s millimeter ?

Answer 1

13.7 mm

Explanation:

To round decimals to tenth we have to look the hundredth, is the hundredth is less than five we drop it and the tenth place does not change. because the hundredth is equal to 5, the tenth place is increased by one. so the stack is 13.7 mm high.