Worksheet: Adding and Subtracting Lengths: Numbers up to 20

In this worksheet, we will practice how to measure objects in centimeters up to 20 and find the sum of or difference between the lengths of two objects.

Q1:

What is the difference in length between the following objects?

Q2:

A wire with a length of 15 cm is divided into two parts. If the length of one of them is 8 cm, what is the length of the other part?

Q3:

Jennifer has a 20 cm long piece of cloth. She divides it into 3 pieces, as shown. What is the difference in length between the longest and shortest pieces?

Q4:

Here are two tapes.

What is the total length of the two tapes?

What is the difference between their lengths?

Q5:

If I stack these cubes on top of each other, what will the total height be?

Q6:

James has two pieces of cloth. What is the total length of both pieces?

Q7:

How much longer is the bigger pencil than the smaller one?

Q8:

Michael has a red and a green strip of ribbon. He measures them using a ruler and puts them together in a line. What is their total length?

Q9:

What is the total length of all the objects shown below?

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