decimal fraction

简明释义

十进制小数

英英释义

例句

1.A common example of a decimal fraction 小数分数 is 0.75, which represents 75/100.

一个常见的decimal fraction 小数分数 的例子是0.75，它表示75/100。

2.In everyday life, prices are often expressed as decimal fractions 小数分数 to indicate cents.

在日常生活中，价格通常以decimal fractions 小数分数 表示，以指示美分。

3.Students learn to add and subtract decimal fractions 小数分数 in their early math classes.

学生们在早期的数学课上学习加减decimal fractions 小数分数。

4.In mathematics, a decimal fraction 小数分数 is a fraction where the denominator is a power of ten.

在数学中，decimal fraction 小数分数 是一个分母是十的幂的分数。

5.When you convert a decimal fraction 小数分数 to a percentage, you multiply it by 100.

当你将一个decimal fraction 小数分数 转换为百分比时，你需要乘以100。

作文

Understanding the concept of a decimal fraction is essential for anyone delving into mathematics or related fields. A decimal fraction, defined as a fraction where the denominator is a power of ten, plays a crucial role in our daily lives. It allows us to express numbers that are not whole, making calculations and measurements more precise. For instance, when we measure ingredients for a recipe, we often use decimal fractions to ensure accuracy. Instead of saying we need one cup of flour, we might specify 1.5 cups, where 0.5 is a decimal fraction representing half a cup.In educational settings, understanding decimal fractions helps students grasp more complex mathematical concepts. For example, when learning about percentages, students often convert decimal fractions into percentages to better understand proportions. If a student knows that 0.25 is equivalent to 25%, they can easily apply this knowledge to real-world scenarios, such as calculating discounts during shopping.Moreover, decimal fractions are vital in fields such as finance and engineering. In finance, interest rates are commonly expressed as decimal fractions. For example, an interest rate of 5% can be represented as 0.05 in decimal fraction form. This representation allows for easier calculations when determining interest accrued over time. In engineering, measurements often require precision, and using decimal fractions ensures that designs and specifications meet required standards.Despite their importance, many students struggle with decimal fractions. They may find it challenging to convert between fractions and decimal fractions, or to perform operations involving them. To overcome these challenges, educators must focus on teaching strategies that emphasize the relationship between fractions and decimal fractions. For instance, using visual aids, such as number lines or pie charts, can help students visualize how decimal fractions fit into the larger picture of numbers.In conclusion, the significance of decimal fractions in mathematics cannot be overstated. They provide a means to express partial quantities, facilitate complex calculations, and enhance our understanding of various mathematical concepts. As we continue to navigate a world that increasingly relies on precise measurements and calculations, mastering decimal fractions will undoubtedly remain a fundamental skill. Therefore, both students and adults alike should strive to improve their understanding of decimal fractions to succeed in their personal and professional endeavors.

理解小数分数的概念对任何深入研究数学或相关领域的人来说都是至关重要的。小数分数被定义为分母是十的幂的分数，在我们的日常生活中发挥着至关重要的作用。它使我们能够表达不完整的数字，从而使计算和测量更加精确。例如，当我们为食谱测量成分时，我们经常使用小数分数来确保准确性。我们不仅仅说需要一杯面粉，而是可能指定1.5杯，其中0.5是一个小数分数，代表半杯。在教育环境中，理解小数分数有助于学生掌握更复杂的数学概念。例如，在学习百分比时，学生通常将小数分数转换为百分比，以更好地理解比例。如果一个学生知道0.25等于25%，他们可以轻松地将这一知识应用于现实场景，例如计算购物时的折扣。此外，小数分数在金融和工程等领域至关重要。在金融领域，利率通常以小数分数表示。例如，5%的利率可以表示为0.05。这种表示法使得在确定时间内产生的利息时更容易进行计算。在工程中，测量通常需要精确度，使用小数分数可以确保设计和规格符合要求。尽管小数分数的重要性，许多学生在学习时却感到困难。他们可能发现将分数转换为小数分数或进行涉及它们的运算具有挑战性。为了克服这些挑战，教育者必须专注于教授强调分数与小数分数之间关系的教学策略。例如，使用视觉辅助工具，如数字线或饼图，可以帮助学生可视化小数分数如何融入更大的数字图景。总之，小数分数在数学中的重要性不容小觑。它们提供了一种表达部分数量的方法，促进了复杂的计算，并增强了我们对各种数学概念的理解。随着我们继续在一个越来越依赖精确测量和计算的世界中航行，掌握小数分数无疑将保持基本技能。因此，学生和成年人都应该努力提高对小数分数的理解，以便在个人和职业发展中取得成功。