Measurement and units (T1 W6)
Progress: 0/7 checkpoints complete (0%).
0/400
0/400
0/400
0/400
0/400
0/400
0/400
0 due | 0 overdue
No due spaced reviews.
No recommendations right now.
No baseline score yet.
No topic mastery records yet.
No adaptive path suggestions yet.
Move from lesson study to exam practice in Mathematics.
No direct subject mapping found yet. Browse past papers to pick province and subject.
Measurement is a way to quantify the physical world around us. It involves determining the size, length, volume, or weight of an object. Common units of measurement include meters for length, liters for volume, and kilograms for weight. Understanding these units helps us compare and analyze different objects and situations. For example, when measuring the length of a pencil, we might say it is 15 centimeters long. This gives us a clear idea of its size.
Let's convert 2500 milliliters to liters. We know that 1 liter equals 1000 milliliters. To convert milliliters to liters, we divide the number of milliliters by 1000. Therefore, 2500 milliliters divided by 1000 equals 2.5 liters. This means that 2500 milliliters is the same as 2.5 liters.
Now, let's practice measuring lengths. I will show you a ruler, and we will measure the length of various classroom items together. For example, if we measure a book and find it is 30 centimeters long, we will write down the measurement. After measuring, we will discuss how to express this measurement in meters as well. Remember, 100 centimeters equals 1 meter, so 30 centimeters is 0.3 meters.
Now it's your turn! Solve the following problems on your own: 1) If a bottle holds 1.5 liters of water, how many milliliters is that? 2) A ribbon is 2.5 meters long. How many centimeters is that? Show your working clearly for each problem. After you finish, we will review your answers together.
Answer: Meters
Meters are the standard unit for measuring length in the metric system.
Answer: 2000 mL
There are 1000 milliliters in a liter, so 2 liters equals 2000 milliliters.
Answer: 1.5 meters
To convert centimeters to meters, divide by 100. Therefore, 150 cm is 1.5 m.
Answer: Kilogram
Kilograms are used to measure weight in the metric system.
Answer: 3000 grams
There are 1000 grams in a kilogram, so 3 kg equals 3000 grams.
Answer: 8 cm³
Volume of a cube is calculated by side³, so 2 cm × 2 cm × 2 cm equals 8 cm³.
Answer: 5 liters
Since 1 liter equals 1000 milliliters, 5000 mL is equal to 5 liters.
Answer: Liters
Liters are the appropriate unit for measuring liquid capacity, such as that of a swimming pool.