According to the experience in life, we can know that pumpkin weighs 3 kilograms, which is a common unit in our mathematics, because the weight of many vegetables needs to be measured by kilograms.

Pumpkin is a common food in our life, and we often see it. People who have bought pumpkins should know the weight of pumpkins. There are many units of measurement used in our lives, such as grams, kilograms and tons. Most of us rely on life experience to decide how heavy this is. Therefore, you must observe more at ordinary times, go shopping with your mother more, and hold your own weight when you buy food. After the teacher has taught you, you will have a certain understanding of quantity in your heart

Life may ask you how much your eggs weigh. How much does this apple weigh? If you want to do such an arithmetic problem well, you need to feel the quantity in your life.