The known dividend is 38.2, and the known dividend is 2.7. According to the definition of division, the quotient is 38.2 ÷ 2.7 =14.14814814814865438.
Multiply both the dividend and the divisor by 10, so that both the dividend and the dividend become integers. The dividend becomes: 382 and the divisor becomes: 27. By vertical calculation, the quotient can be obtained as follows:14.148148148149×10 =10.
Since both divisor and dividend are decimals, we need to divide the quotient by 10 to get the final quotient. 14 1.48 148 148 15 ÷ 10 = 14. 148 14865438+
Advantages of vertical operation:
1, step by step: the vertical operation is calculated step by step, and each step is calculated sequentially from the highest bit. This operation mode can make every step get clear results, and can find and correct errors in calculation in time. In contrast, other calculation methods, such as manual calculation or calculator calculation, often require multiple steps at a time, which is easy to cause calculation errors or confusion.
2. Accuracy guarantee: The accuracy guarantee of vertical operation is another significant advantage. In vertical operation, each digit has an independent column, which can avoid carry error or borrow error in conventional horizontal calculation. In addition, vertical operation can also ensure the accuracy in multi-step operation by retaining the remainder. This makes the vertical operation have a higher accuracy guarantee when dealing with complex mathematical problems.
3. Convenient checking calculation: Another advantage of vertical operation is convenient checking calculation. In vertical operation, the calculation results of each step are clearly visible, which is convenient for us to check whether the calculation of each step is correct. If mistakes are found, they can be found and corrected immediately. In contrast, some other calculation methods may need to do all the calculations again, which is time-consuming and laborious.
4, symbol operation: vertical operation can be very convenient for symbol operation. When dealing with algebraic expressions or equations, vertical operation can clearly show the coefficient, degree and symbol of each term, making the algebraic operation process more intuitive and clear. This is helpful to better understand the structure and properties of mathematical expressions, and is of great help to learning mathematics courses such as algebra and equations.
5. Cultivate mathematical thinking: As a logical reasoning process, vertical operation helps to cultivate people's mathematical thinking ability and problem-solving ability. In the process of vertical operation, various mathematical concepts, theorems and laws are needed, which is helpful to strengthen people's understanding and application of mathematical concepts. At the same time, vertical homework requires people to have rigorous thinking and accurate calculation ability, which is helpful to cultivate people's logical thinking and reasoning ability.