decimal multiply

简明释义

十进制乘法

英英释义

例句

1.To convert kilometers to miles, you can decimal multiply by 0.621371.

要将公里转换为英里，你可以小数相乘0.621371。

2.When cooking, if a recipe calls for 1.5 cups of flour and you want to double it, you must decimal multiply by 2.

在烹饪时，如果食谱需要1.5杯面粉而你想要加倍，你必须小数相乘2。

3.In statistics, the expected value is calculated by decimal multiplying probabilities with outcomes.

在统计学中，期望值是通过小数相乘概率与结果来计算的。

4.To calculate the area of a rectangle, you need to decimal multiply the length and width.

要计算矩形的面积，你需要小数相乘长度和宽度。

5.In finance, you often decimal multiply interest rates with principal amounts to find earnings.

在金融中，你经常小数相乘利率与本金以计算收益。

作文

In mathematics, the concept of multiplication is fundamental, and it becomes even more interesting when we deal with decimals. The process of decimal multiply refers to multiplying numbers that are expressed in decimal form. This operation is essential in various real-life situations, such as calculating prices, measurements, and scientific data. Understanding how to decimal multiply can significantly enhance one’s mathematical skills and confidence in handling numbers.To begin with, let us consider what decimals are. Decimals are numbers that contain a decimal point, which separates the whole part from the fractional part. For example, the number 3.75 has a whole part of 3 and a fractional part of 0.75. When we engage in decimal multiply, we must be careful with the placement of the decimal point in the result. The first step in decimal multiply is to ignore the decimal points in the numbers being multiplied. For instance, if we want to multiply 2.5 by 1.2, we first treat these numbers as whole numbers, which gives us 25 and 12. We then proceed to multiply these two whole numbers: 25 times 12 equals 300.Next, we need to determine the correct position of the decimal point in the final answer. This is done by counting the total number of decimal places in the original numbers. In our example, 2.5 has one decimal place, and 1.2 also has one decimal place, making a total of two decimal places. Therefore, we place the decimal point in the result (300) to create a number with two decimal places, resulting in 3.00 or simply 3.Now that we understand the basic mechanics of decimal multiply, let’s explore some practical applications. One common scenario where decimal multiply is used is in shopping. Imagine you are buying 3.5 meters of fabric at a price of 7.2 dollars per meter. To find the total cost, you would perform a decimal multiply: 3.5 times 7.2. Ignoring the decimal points, we multiply 35 by 72 to get 2520. Since there are a total of three decimal places (one in 3.5 and two in 7.2), we place the decimal point in the answer to get 25.20 dollars.Another example can be seen in cooking, where precise measurements are crucial. If a recipe calls for 0.5 cups of sugar and you want to make three batches, you would need to decimal multiply 0.5 by 3. This gives you 1.5 cups of sugar. Here, the understanding of decimal multiply ensures that you have the right amount of ingredients, leading to a successful dish.In conclusion, mastering the art of decimal multiply is not only about performing calculations correctly but also about applying this knowledge in everyday life. Whether you are shopping, cooking, or managing finances, the ability to decimal multiply efficiently can save time and help avoid costly mistakes. As we continue to encounter decimals in various aspects of our lives, developing a solid grasp of decimal multiply will undoubtedly prove beneficial. With practice and patience, anyone can become proficient in this essential mathematical skill.

在数学中，乘法的概念是基础性的，当我们处理小数时，它变得更加有趣。decimal multiply这个过程指的是乘以以小数形式表示的数字。这项操作在各种现实生活场景中都是必不可少的，例如计算价格、测量和科学数据。理解如何进行decimal multiply可以显著提高一个人的数学技能和处理数字的信心。首先，让我们考虑一下什么是小数。小数是包含小数点的数字，小数点将整数部分与分数部分分开。例如，数字3.75有一个整数部分3和一个分数部分0.75。当我们进行decimal multiply时，我们必须小心结果中小数点的位置。进行decimal multiply的第一步是忽略要相乘的数字中的小数点。例如，如果我们想要将2.5与1.2相乘，我们首先将这些数字视为整数，这样我们就得到了25和12。然后我们继续将这两个整数相乘：25乘以12等于300。接下来，我们需要确定最终答案中小数点的正确位置。这是通过计算原始数字中小数位数的总和来完成的。在我们的例子中，2.5有一位小数，1.2也有一位小数，总共有两位小数。因此，我们在结果（300）中放置小数点，以形成一个带有两位小数的数字，得到3.00或简单地说3。现在我们理解了decimal multiply的基本机制，让我们探索一些实际应用。decimal multiply被使用的一个常见场景是购物。想象一下，你正在以每米7.2美元的价格购买3.5米的布料。要找出总成本，你需要进行decimal multiply：3.5乘以7.2。忽略小数点，我们将35乘以72得到2520。由于原始数字中总共有三位小数（3.5中有一位小数，7.2中有两位小数），我们在答案中放置小数点，得到25.20美元。另一个例子可以在烹饪中看到，精确的测量至关重要。如果一个食谱要求0.5杯糖，而你想做三批，那么你需要decimal multiply 0.5与3。这给你1.5杯糖。在这里，对decimal multiply的理解确保你有正确的配料量，从而制作出成功的菜肴。总之，掌握decimal multiply的艺术不仅仅是正确地进行计算，还在于将这一知识应用于日常生活中。无论你是在购物、烹饪还是管理财务，能够高效地进行decimal multiply都可以节省时间并避免代价高昂的错误。随着我们在生活的各个方面继续遇到小数，发展对decimal multiply的扎实掌握无疑会带来好处。通过实践和耐心，任何人都可以熟练掌握这一基本的数学技能。