Question

3. Jessica is measuring two line segments. The first line segment is 30 cm long. The second line segment is 500 mm long. How long are the two line segments together? (answer in cm). Remember to show your work to receive full credit.

Answer 1

There are 10 millimeters in one centimeter (centi means 10). 500 millimeters to centimeters (divide by ten) would be 50 centimeters. 50 centimeters added to 30 centimeters is 80 centimeters total.