Marguerite is building a box from strips of wood. she needs 78 pieces of wood that are each 29 centimeters long. the wood comes on boards that are 6 meters long how many boards will she need. explain

Marguerite is going to need  4 pieces of wood because...
 1 piece= 6m which =600cm
She needs 78 pieces of 29cm78x29=2262 
then divide 2262 by 600 and that gives you 3.77.
You cant have 3.77 pieces of wood so you have to round to 4.