First, import

Hello everyone, today we are going to learn an interesting topic, that is, the characteristics of multiples of 2. Do you know what's special about multiples of 2? Let's explore together.

Second, explain the definition of multiple of 2.

First, we need to know what is a multiple of 2. A multiple of 2 refers to a number divisible by 2, such as 2, 4, 6, 8, etc. We can use a simple model to describe this feature, that is, when we multiply the multiple of 2 by 10, the result is still a multiple of 2.

Third, the characteristics of multiples of 2

Next, let's discuss the characteristics of multiples of 2. We can find that the multiple of 2 can only be 0, 2, 4, 6 or 8 in decimal representation. In other words, if we have a multiple of 2, then its single digits must be even. This is a very important feature, which can help us quickly judge whether a number is a multiple of 2.

Fourth, prove the characteristics of multiples of 2

So, why do the single digits in multiples of 2 have to be even? This is because when we calculate, the single digits represent the remainder of this number divided by 10. If a number is a multiple of 2, the remainder of its division by 10 must also be even, which is why a single digit must be even.

Application example of verb (abbreviation of verb)

Now let's see how to use this feature to solve practical problems. For example, we have a number 38, and we want to know if it is a multiple of 2. We can check that its single digit 8 is even, so 38 is a multiple of 2. We can also use this feature to judge whether a number is a multiple of 2. For example, if one digit of a number is odd 1, 3, 5, 7 or 9, the number is not a multiple of 2.

Summary and review of intransitive verbs

Today we learned the characteristics of multiples of 2 and how to judge whether a number is a multiple of 2. This function is very useful in our daily life. For example, when calculating time and distance, we can judge whether a number is a multiple of 2 by looking up a single digit. In the next study, we will continue to explore the characteristics of other numbers and learn how to use them to solve practical problems.

Seven. Homework and development

Today's homework is to let everyone go home and find some examples of multiples of 2, and try to judge whether it is a multiple of 2 with the characteristics learned today. At the same time, we can also think about whether we can judge the characteristics of other numbers in a similar way. For example, can we judge whether a number is a multiple of 3 by checking the single digits of the number? This will be the content of our next research.