Bai giang : So nguyen to

This episode will be in the theme of The 17th lesson of the 10th chapter of the series The Number of Elements of the First Day of School Let's get started! Here's the story of the story Mom has bought a bouquet with 11 roses My friend helps Mom put these flowers into small jars and the number of flowers in each jar is equal Mom realized that she couldn't put If we put all the flowers in the flower pots, each flower pot will have more flowers than one flower pot Even if the number of flower pots is 2, 3, 4 or 5 But if we put one flower pot and 10 flowers in the flower pot, each flower pot will have more flowers than one flower pot So what is the difference between the number 11 and 10? And does this have anything to do with the number of flowers in the flower pot? We see that 11 flowers have 2 ways to plant 11 flowers planted in 1 pot because 11 divided by 1 11 flowers planted in 11 pots because 11 divided by 11 We see that 11 has 2 wishes, 1 and 11 10 flowers have 4 ways to plant 10 flowers planted in 1 pot because 10 divided by 1 10 flowers planted in 2 pots because 10 divided by 2 10 flowers planted in 5 pots because 10 divided by 5 10 flowers planted in 10 pots because 10 divided by 10 10 has more than 2 wishes, and specifically, it has 4 wishes. So, with numbers that only have 2 wishes, 1 is it, and with numbers that have more than 2 wishes, is there any difference? Let's find out the content of Lesson 10. NUMBERS AND FACTORS 1. NUMBERS AND FACTORS Act 1. I ask you to think and answer the question. A. Does 0 divide 2, 5, 7, 2017, 2018? Do you have any comments on the number of wishes of 0? B. How many wishes does 1 have? Your time to think begins. 1. I see that 0 died for 2, 5, 7, 2017, 2018. 0 has infinite wishes, and 1 has only 1 wish. So, what is the number of wishes of numbers greater than 2? Let's divide the numbers in Act 2. Let's divide the numbers in Act 2.1 into 2 groups. The group with the numbers has only 2 wishes, and the group with the numbers has more than 2 wishes. Here are also the numbers 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11. We can easily see that the numbers only have 2 wishes, including numbers 2, 3, 5, 7, and 11. The numbers with more than 2 wishes are numbers 4, 6, 8, 9, and 10. And then people call the numbers 2, 3, 5, 7, 11 as the factors. And the numbers 4, 6, 8, 9, and 10 are the factors. So, can you tell me what numbers are called factors? And what numbers can we easily see? Factors are natural numbers greater than 1. There are only 2 wishes, 1 and it. And factors are natural numbers greater than 1. There are only 2 wishes, 1 and it. So, if a natural number is not a factor, then it must be a factor. Let's find that number. Here is the factor table. Let's observe the factor table and find out which factor is the smallest. From the factor table, we can easily see that the smallest factor is number 2. And it is the only factor. In this part, you need to pay attention. Number 0 and number 1 are not factors and are not numbers. Number 2 is the smallest factor and is the only constant factor. From the knowledge just acquired, please make her practice 1. Please find a suitable house for the numbers in table 2.1. Based on the concept of determining factors and constants, I can easily recognize the numbers 2, 3, 5, 7, 11 will be placed in the house of factors. And the numbers 4, 6, 8, 9, 10 will be placed in the house. Next, I have an example 1 to help you practice how to recognize, determine factors and constants. Example 1. Which number below is a factor? Which number is a constant? Let me know why. A. 1975 B. 17 We see that the number 1975 is divisible by 5. In addition to the two promises of 1 and 1975, it also has a promise of 5. So the number 1975 is a factor. B. Number 17 only has two promises of 1 and 17, so 17 is a constant. Through this example, please note that to determine a number is a constant, we often use divisible symbols to find another 1 and it is. So I have guided you to learn the knowledge of factors and constants. Go home and practice more exercises to strengthen your knowledge of factors and constants. Examples, explanations, where is the factor, where is the constant. Prove that 1 is a constant.