The use of integers in fractional problems

Mathematical Olympiad Problem Solving Dictionary] spent: 50 2 = 25 yuan.

Chinese Dictionary] spent: 50 1 2 3 10=yuan.

English-Chinese dictionary] spent: 50 1 2 10 23=?(The numbers are out of order) and the last thing left: ?

Composite formula: 50-50 (1 2+1 2 3 10+1 2 10 23).

The Mathematical Olympiad Problem Solving Dictionary spent money: 3 10 1 2=3 20 Modern Chinese Dictionary spent money: 10 23 1 2=5 23 The money used to buy 4 books is a common multiple of 20 and 23, the least common multiple of 20 and 23 is 460, 50 yuan = 500 jiao, and because 460 1 500 460 2, the money used is 460 jiao = 46 yuan.

Zhang Yang is left with 50-46=4 (yuan) at the end

Zhang Yang bought the fourth book and bought it.

61 (jiao) yuan).

Note: The money used is not 50 yuan, because the 50 yuan is not used up. The answer is completely wrong!

The fourth book is **: 1-1 2-1 2*3 10-1 2*10 23=61 460

Four books in total: (1 2 + 1 2 * 3 10 + 1 2 * 10 23 + 61 460) = 460 jiao < 500 jiao.

Remaining: 500-460 = 40 (corner) = 4 yuan.

There are 10 apples, eat a half, eat a few apples?

Ate 10*1 2=5 apples.

Addition The operation of merging two numbers into one number, the operation of combining two decimal places into one decimal number, the operation of combining two fractions into one fraction.

Subtraction An operation that knows the sum of two additions and one of them, and finds another addition The operation of knowing the sum of two additions and one of them, finding the addition of another addition.

Multiplication A simple operation to find the sum of several identical additions Multiply a decimal by an integer in the same sense as integer multiplication.

Multiplying a number by a pure decimal is to find the tenths of the number, the hundredths of the ......Multiplying fractions by integers has the same meaning as integer multiplication.

Multiplying a number by a fraction is to find the fraction of the number.

Division Knowing the product of two factors and one of the factors, the operation to find the other factor has the same meaning as integer division and the same meaning as integer division.

It's a plus point.

Xiao Ming's family has 5 liters of cooking oil, and an average of one fifth of it needs to be used every day, how many days can it be used?

5 (1 5) = 25, can be used for 25 days.

Anything else? Uh, uh.

A watermelon weighs four kilograms, mom eats one-fifth, dad eats one-quarter, Xiaoliang eats one-half, and how many kilograms are left?

4*(1-1 5-1 4-1 2) = 1 5 kg.

A watermelon weighs four kilograms, mom eats one-fifth, dad eats one-quarter, Xiaoliang eats one-half kilogram, and how many kilograms are left?

4*(1-1 5-1 4)-1 2=17 10 kg.

A rope is forty meters long, the first cut is five fifths of a meter, the second time the remaining two-fifths are cut, and the second cut is a few meters?

40-5 2)*2 5=7 meters.

A road is 400 kilometers long, and one eighth of the total length was repaired on the first day, and one-fifth of the total length was repaired on the second day, and a total of several kilometers were repaired in two days?

400*(1 8+1 5)=130 km.

A road is 1,500 meters long, and on the first day it is repaired two-fifths of the total length, and on the second day it is repaired one-third of the total length, and how many meters are left unrepaired?

1500*(1-2 5-1 3)=400 meters.

A biscuit, cut two-fifths to Xiaohua, Xiaohua eats three-quarters of it, Dad eats the remaining two-thirds after cutting to Xiaohua, who eats more, how many more?

Xiaohua eats: 2 5 * 3 4 = 3 10 Dad eats: (1-2 5) * 2 3 = 2 5

2 5-3 10 = 1 10 So, Dad eats more, 1 10 more.

4-4*（1/5+1/4+1/2）=

1500-1500*(1 3+2 5)=400 Xiaohua eats: (2 5)*(3 4)= Daddy eats: (1-2 5)*(2 3)= So Daddy eats more. Much more.

Divide the whole number by answering the filial piety hail application problem of the vertical fraction.

Xiao Ming's family has 5 liters of edible oil, and an average of one-fifth of a liter of Qingda needs to be used every day, how many days can it be used?

5 (1 5) = 25, can be used for 25 days. Thank you.