Find 700 simple math fractions for the fifth grade of primary school

6 Qingquan Elementary School 500 people participated in the entrance ceremony of the sports meeting, every 20 people in a line, the distance between the two rows is 3 meters, the rostrum is 18 meters, they pass the rostrum at a speed of 30 meters per minute, how many minutes does it take. 85 7 can be turned into a circular decimal place, ask what is the number in the 1995th place after the decimal point of this circular decimal number? What is this number.

9 The three sides of a triangle are three consecutive two-digit even numbers, and the sum of their mantissa is divisible by 7 to find the maximum circumference of the triangle. 10 has a fraction, if the numerator and denominator are added to 1, then the fraction becomes 1 2, if the numerator and denominator are subtracted by 1, then the fraction becomes 2 5, find this fraction. 11 One day, a jewelry store in a certain city had stolen diamonds worth tens of thousands of yuan.

After reporting the case, after three months of investigation, it was ascertained that the perpetrator must be one of A, B, C, and D. After interrogation, the confessions of the four men were as follows: A:

On the day the diamond was stolen, I was in another city, so I wasn't a criminal. B: D is a criminal.

C: B is a thief, and three days ago, I saw him selling a diamond on the black market. Ding:

B has enmity against me, and intends to frame me. Because of the inconsistencies in the confessions, it is impossible to determine who is the culprit. After the panic test, it is known that only one of the four people is telling the truth, so who is the criminal?

I will give you in batches, remember that I am submarine091:1 on the first day of class every two students meet and shake hands with each other, how many times do the 40 people in the class shake hands? 2 The second term of a series of equal differences is 2 8, and the third term is 3 1, find the 15th term of this series of equal differences.

Each picture book is a meta. 4. The oil in the east oil inventory is 6 times that of the oil in the west oil stock, if the two oil depots each increase 30 tons of oil, the oil in the east oil will be 3 times the oil in the west oil stocks, how many tons of oil in the two oil depots respectively? 5 A six-digit abcdek, multiplied by e, the original number is kabcde, what is the original number?

Different letters represent different numbers) What is the original number.

Grade 5 fractions are easy to calculate

You can choose some simple ones to do below. .We really hope you will adopt it!

When I slept and washed, cut and blow, I felt that I would go home to hit the first few episodes.

The fifth grade second volume of mathematics oral arithmetic questions 600 questions 17 40 100 63

The simple arithmetic of grade 5 fractions includes addition, subtraction, multiplication and division, fraction simplification, fraction comparison and judgment, etc. Here's a detailed explanation:

Addition: Add the numerators of two fractions with the same denominator, and the denominator remains the same. Subtraction:

Subtract the numerators of two fractions with the same denominator and keep the denominator unchanged. Multiplication: Multiply the numerator of two fractions and multiply the denominator.

Division: Multiply the numerator of one fraction by the denominator of another fraction, and multiply the denominator by the numerator of another fraction.

find out the common factors of the numerator and denominator; Divide the numerator by the common factor before the circle and the denominator at the same time; The simplified score should be the simplest score. The numerator is multiplied by the denominator of another fraction and then compared to the numerator whose denominator is multiplied by another fraction. If you want to convert a fraction to a percentage or decimal, you can use the numerator denominator 100% = percentage, numerator denominator = decimals.

Expand your knowledge:

A fraction originally refers to a part of a whole, or more generally, any part of an equal number. It is debatable whether a false fraction that is expressed as a ratio of an integer a to an integer b and a multiple of b is a fraction. A fraction indicates that a number is a fraction of another number, or the ratio of one event to all events.

The unit "1" is divided equally into dry parts, indicating that the number of such a part or several parts is called a fraction. The numerator is on top and the denominator is on the bottom. When the denominator is 100, it can be written as a percentage, such as 1%.

The meaning is different, the percentage only represents the multiple relationship between two numbers, and cannot carry the name of the unit.

Fractions can represent both specific numbers and the relationship between two numbers, and the unit name can be used when representing specific numbers. Different application ranges, percentages are often used in surveys, statistics, analysis and comparison in production and life, while fractions are often used when integer results are not available in calculations and measurements.

The earliest fractions were the reciprocal of integers: ancient symbols representing one-half, one-third, one-quarter, and so on. Egyptians use Egyptian scores.

About 4,000 years ago, the Egyptians separated them in a slightly different way of fractions. They use least common multiples versus unit fractions. Their approach gives the same answer as the modern one.

The first one is divided, and the second one is de-bracketed. The third one is bracketed.

Only question 4 can be easily calculated.