Lesson: Adding and Subtracting Lengths: Numbers up to 20 Mathematics
In this lesson, we will learn how to measure objects in centimeters up to 20 and find the sum of or difference between the lengths of two objects.
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?
What is the difference in length between the following objects?
Here are two tapes.
What is the total length of the two tapes?
What is the difference between their lengths?