Module 20 • Form A Module Test

Measure the pieces of ribbon. What is the difference in their measurements? A diagram shows two pieces of ribbon measured against a ruler marked in centimeters.

• 2 centimeters

• 4 centimeters

• 6 centimeters

How much longer is the toy garbage truck than the toy fire truck?

(a)  

Liz has a pencil that measures 13 centimeters long. She has a marker that measures 18 centimeters long. What is true about the difference in the lengths of the pencil and marker? Use the number line to solve.

• The pencil is 5 centimeters longer than the marker.

• The pencil is 5 centimeters shorter than the marker.

• The marker is 5 centimeters shorter than the pencil.

Use the centimeter ruler to add and subtract. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 centimeters 9 + 3 = (a)  

Use the centimeter ruler to add and subtract. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 centimeters 19 - 4 = (a)  

Mara's yarn is 68 centimeters long. She cuts off 14 centimeters. How many centimeters of yarn does Mara have left? Use the number line to write an equation and solve.

(a)  

Ivan makes a key chain that is 27 inches long. Owen makes a key chain that is 14 inches long. How long are Ivan's and Owen's key chains in all? Use the number line to write an equation and solve.

(a)