Section outline

  • Absolute Value
    ::绝对值

    The absolute value of an integer is an important concept in math, often used to measure distance and change. Remember that   t he absolute value of a number is the distance of that number from zero .
    ::整数的绝对值是数学中的一个重要概念, 通常用来测量距离和变化。 记住数字的绝对值是该数字与零的距离 。

    Use the interactive below to see how absolute values are used to measure distance on a number line .
    ::使用下面的交互式数据查看如何使用绝对值来测量数字行的距离。

     

    INTERACTIVE
    Absolute Value
    minimize icon
    • Choose a number on the slider to see its absolute value.
      ::在滑块中选择一个数字以查看其绝对值。
    • Click "Show Steps" to see how it is calculated.
      ::点击“ 显示步骤” 来查看它是如何计算的 。
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    @$\begin{align*}\left|-9\right|\lt \left|9\right|\end{align*}@$
    ::@ $\ begin{ left}\- 9\ right} lt\ lleft\\\ 9\ right}\ right\ end{ end{ 调整} $

    TRUE
    ::真实

    FALSE
    ::公平交易

     

     

    Sea Level
    ::海平面海平面

    The  lesson   looked at the elevations of various locations in the United States.
    ::该课程考察了美国各地的海拔。

    In the interactive, see how using the absolute values of integers can help determine distances from zero elevation.
    ::在互动中,请看使用整数的绝对值如何帮助确定距离零高度的距离。

     

    INTERACTIVE
    Sea Level
    minimize icon

    Label the elevation of each city on the number line.
    ::在数字线上标出每个城市的高度

    • Click on a section of the number line to zoom in.
      ::点击要缩放的数字行的一节 。
    • Once zoomed in, click on the number line again to select a range. 
      ::缩放后, 单击数字行再次选择一个区域 。
    • Choose the label of the city you want to label at that elevation.
      ::选择要在该高地标签的城市的标签 。
    • Click "Submit" to check your answer. 
      ::点击“ 提交” 检查您的回答 。
    • Click "Zoom out" to go back to the original view.
      ::单击“ 缩小” 返回原始视图 。
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    The Stock Market
    ::股票市场

    lesson content
    Stock Market Board

    A common application of absolute value is in the stock market. Stock traders are more interested in the amount a stock changes by than in the  actual value. Many stock boards show a decrease in value using the  - symbol and the color red. An increase in value is shown using the  + symbol and the color green.
    ::绝对价值的通用应用是在股票市场上。 股票交易商对股票数额的变化比实际价值的变化更感兴趣。 许多股票董事会使用符号和红色显示价值的下降。 价值的增加用+符号和绿色显示。

    The interactive below displays the changes in the value of several stocks over the course of a day. Through the following interactive, you will use absolute value to order the stocks from greatest to least change in price.
    ::以下互动显示一天内若干库存价值的变化。通过以下互动,您将使用绝对值将库存从价格的最大变化到最低的价格变化。

     

    INTERACTIVE
    Order Your Stocks
    minimize icon
    • Order the stocks top to bottom based on absolute change.
      ::根据绝对变化,从上到下订购股票。
    • Press the "Check Button" to check your work!
      ::按“ 检查按钮” 检查您的工作 !
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    Absolute Value Puzzle
    ::绝对值谜题

    In the interactive below, practice comparing integers and their absolute values by completing a puzzle game.
    ::在下文互动部分,通过完成拼图游戏,对整数及其绝对值进行比较。

     

    INTERACTIVE
    Absolute Value Puzzle
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    • Drag the tiles into correct spots to complete the comparison grid
      ::将瓷砖拖拖到正确位置以完成比较网格
    • Click "Check" to see which tiles are incorrectly placed
      ::点击“ 检查” 以查看哪些牌被错误安放
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     Summary
    ::摘要

    • The absolute value of a number is its distance from zero.
      ::一个数字的绝对值是它与零的距离。
    • When ordering absolute value of numbers, ignore the signs because the absolute value of any number is always positive.
      ::当命令数字的绝对值时, 忽略符号, 因为任何数字的绝对值总是正数 。