Question

Lorena has two pieces of ribbons. One piece is 3 meter 14 centimeter long. The other piece is 8 meters 24 centimeters long. How many centimeters of ribbon does Lorena have in all

Answer 1

Lorena has
3 meters=300 cm
1st piece=314 cm 
8 meters=800 cm
2nd piece=824 cm
together=824+314=1138 cm  or 11 meters and 38 cm
1m=100 cm