1. Case 1: Divider is decimal and dividend is integer:
If the dividend is an integer and the divisor is a decimal, you can convert the decimal divisor into a fraction. For example, to calculate 5 divided by 0.5, you can convert 0.5 into a fraction, that is, 1/0.5, and then divide by this fraction. The calculation is as follows:
5÷0.5=5×( 1/0.5)=5×2= 10
So, 5 divided by 0.5 equals 10.
2. Case 2: Dividend and divisor are decimals:
If both dividend and divisor are decimals, you can move their decimal points to make the divisor an integer. For example, if you want to calculate 0.3 divided by 0.02, you can move the decimal point two places to the right and convert both decimal points into integers. The calculation is as follows:
0.3÷0.02=30÷2= 15
So 0.3 divided by 0.02 equals 15.
Application of fractional division
1, currency exchange
Decimal division plays an important role in daily life and business transactions. When currency exchange is needed, fractional division is needed. For example, if people need to convert RMB into USD, they need to know the exchange rate between RMB and USD, and then divide the RMB amount by the exchange rate to get the USD amount. In this process, fractional division plays a key role.
2, the proportion problem
Fractional division is also often used in proportion problems. Proportion is an important concept in mathematics, which describes the relationship between two or more quantities. When solving the problem of proportion, fractional division can help people solve the unknown. For example, if a person knows the ratio of two lengths, he can find the specific values of these two lengths by fractional division.
3. Percentage calculation
Fractional division also has an important application in percentage calculation. A percentage is a number, which means that one number is the percentage of another number, and is often used in statistics and data analysis. When calculating percentages, people need to use fractional division.
For example, you need to calculate the percentage of sales of a product in total sales. You need to divide the sales of this product by the total sales, and then multiply it by 100% to get the percentage of sales of this product in total sales.