? Wonderful, wonderful, wonderful! ? Math is really interesting.

Not long ago, we learned a series of knowledge about fractions. How much is 3 divided by 4? I don't know, it's three quarters! Is it? 1? Divide into four parts on average, and take three of them, that is, fraction and division. Tell you, there are three kinds of scores, true score, false score and identical score. Fractions with numerator less than denominator are called true fractions, and fractions with numerator greater than or equal to false fractions are called with fractions.

Tell you a secret. Turning fractions into decimals can turn fractions into decimals and then into decimals. Divide it into decimal fractions, for example, 4/5,65438+8/00 equals 0.8. How's it going? Relax.

Can 65438+5823 in 07469 be divided into the simplest fractions? I can. The numerator and denominator have three digits and nine digits, and cannot be reduced by two or five. Then add up the digits of numerator denominator, 5+8+2+3= 18, 1+7+4+6+9=27. 18 and 27 are multiples of 3, divisible by 3, and equal to 194 1 in 5823. But now I don't know who to divide it by, but divide it by 3, and the denominator is exactly 5823, which means that the original denominator is three times that of the original numerator. 17469 divided by 5823 equals 3, 5823 divided by 5823 equals 1, 17469 5823 equals 1.

? Interesting, interesting, interesting, math is really interesting! ?

Fractional math diary II

Last term, we studied fractions. The teacher told us that fractions have numerator, denominator and fractional line, such as: 1/3, where 3 is denominator, 1 is numerator, and the middle horizontal line is fractional line.

Scores are used in many places in life. In order to deepen my understanding of fractions, my mother also made a cake and cut it into two parts with a knife. Each part is 1/2 of this cake. Then put these two parts together, there are two 1/2, which is just a cake. This is the addition and subtraction of fractions that teacher Zhang said in class. Of course, we only learn addition and subtraction when the denominator is the same, and we can add and subtract when the denominator is different, but we haven't learned it yet. I also learned to compare scores. Teacher Zhang taught us the formula: the score with the same numerator is smaller than the denominator, and the score with the larger denominator is larger; Denominators are the same as numerators, with large numerator scores larger and small numerator scores smaller.

The knowledge of learning fractions really helps us a lot in our daily life. Don't believe you? Look: Today, my family went to KFC to have a family fun. When we get there, people are always crowded. We finally ordered good food and found a seat to sit down. Here comes the food. This is a sumptuous set meal. There are 12 drumsticks in it. Dad asked me first? Attack? Then he said to me:? Today's chicken leg is yours, provided that it is divided fairly. ? I snickered and thought, hum! Dad, you underestimated me, too A fair share is an average score, isn't it? Then I remembered the division of 12? 3=4。 I gave my parents four drumsticks each, and my parents looked at me? The answer? Nodding with satisfaction, our family started like this? Giggle? I got up, and soon my drumstick was swept away by me. Later, I ate two drumsticks from my mother, 1 drumsticks from my father, and I haven't enjoyed them yet? Have enough to eat and drink? Where is the fun? Mom began to talk again: honey, you ate so many chicken legs today, you can't eat them for nothing. Let me ask you, how much did you eat today? If you answer correctly, you will pass the exam. If your answer is wrong, you will pay for the meal, and the money will be deducted from your pocket money later. ? This is no joke. This meal costs 100 yuan anyway. If it's all deducted from my pocket money, my god, it will take a year or two to finish it. I can't do this loss-making business. I thought about it for a long time and answered: I ate 7/ 12. ? From the expression of parents' approval, I know that my answer is correct.

Fortunately, I have learned the knowledge of fractions and can answer the questions correctly. Can I eat KFC in the future? Sit down and relax. Yes. It really responded to teacher Zhang's words: As long as you put your heart into your life, you can have math knowledge everywhere.

Fractional math diary III

Last week, we studied fractions. Fractions have numerator, denominator and fractional line, for example, 1/3, where 3 is denominator, 1 is numerator and the middle horizontal line is fractional line.

Scores are used in many places in life. For example, a book has thirty pages, and each page is 1/30 of a book. Fractions can also be used to add and subtract! For example, half plus half equals two, which is 1. Why is this happening? If you divide a cake into two parts, each part is 1/2 of the cake, and then put the two parts together, there are two parts 1/2, which is just a cake. When adding and subtracting fractions, if the denominator is the same, only the numerator is added, regardless of the denominator. And 2/2 of the numerator and denominator are the same, which is 1.

I also learned to compare the size of fractions. The teacher taught us the formula: numerator is the same as denominator, the fraction with large denominator is small, and the fraction with small denominator is large; Denominators are the same as numerators, with large numerator scores larger and small numerator scores smaller.

The teacher also reminded us that when writing scores, we usually write scores first, which means average score, then denominator and finally numerator.

Math diary's fourth chapter on fractions.

Last week, we studied fractions. Fractions have numerator, denominator and fractional line, for example, 1/3, where 3 is denominator, 1 is numerator and the middle horizontal line is fractional line.

Scores are used in many places in life. For example, a book has thirty pages, and each page is 1/30 of a book. Fractions can also be used to add and subtract! For example, half plus half equals two, which is 1. Why is this happening? If you divide a cake into two parts, each part is 1/2 of the cake, and then put the two parts together, there are two parts 1/2, which is just a cake. When adding and subtracting fractions, if the denominator is the same, only the numerator is added, regardless of the denominator. And 2/2 of the numerator and denominator are the same, which is 1.

I also learned to compare the size of fractions. The teacher taught us the formula: numerator is the same as denominator, the fraction with large denominator is small, and the fraction with small denominator is large; Denominators are the same as numerators, with large numerator scores larger and small numerator scores smaller.

The teacher also reminded us that when writing scores, we usually write scores first, which means average score, then denominator and finally numerator.