Length

6.1 Chapter 6: Measurement

This topic helps and facilitates us to perform daily activities using units of measurement in length, mass and volume of liquids.

6.1

Unit measuring length, mass, and volume of liquid

Objects can be measured using different non -standard units.

Make an estimate before carrying out the measuring activity and compare the estimated measurement with the actual measurement.

One of the ways to describe the length of an object is by comparing objects.

As in the picture, the white cat is closer than the gray cat.

6.2

Problem Solving

Example of Length Question

Ramu has a pencil. The length of the pencil is the same as the eraser.

Mary has a pen. The pen is shorter than the pencil.

How likely is it that the number of erasers is equal to the length of the pen?

The length of the pencil is the same as the eraser. Whereas, the length of the pen is shorter than the length of the pencil.

This means that the number of erasers equal to the length of the pen is less than, i.e. 3 half erasers.

Example of Mass Question

Both Mariam and Sharul lifted a box.

Who lifts the heavier box?

From the picture, we can see that Mariam can lift the box without using as much effort as Sharul.

It means the box Mariam picked up was lighter. So, we can say that Sharul lifted a heavier box.

So the correct answer is Sharul.

Example of Volume of Liquid Question

Samsul bought a bottle of orange juice. He poured all the orange juice into several cups. He drank two cups and gave three more cups to his friend.

How many cups can be filled with a bottle of orange juice?

Samsul poured all the orange juice into several cups. There were two cups he drank and there were three cups given to his friend.

So, two cups plus three cups are equal to five cups.

Quick Notes