Question

theo has a wooden board this is 780 millimeters long. How long is the board, in centimeters? round youre answer to the nearest tenth​

Answer 1

it should be 78 centimeters

Explanation:

1 mm=0.1 cm

780 times 0.1= 78 cm

if you want to round to the nearest tenth then it will be 78 because 78.00 rounded to the tenth is 78.0 because we know that is the number after the place that we need to round is 5 or higher then you round up and if it is below 5 it stays that same.

Answer 2

78cm

Explanation:

780mm = 780/1000 (m)

therefore 780mm = 0.78 m

but 100cm = 1m

implying that

0.78m = 78cm