写的 - Esa Helttula
1. Some of the other 40 iDevBooks math apps are Column Addition, Long Multiplication, Long Division, Column Subtraction, Visual Multiplication Table, Partial Differences Subtraction, Partial Products Multiplication, Partial Sums Addition, Decimal Rounding, etc.
2. iDevBooks math apps have been reviewed and endorsed by Wired.com, IEAR.org, Edudemic.com, Teachers with Apps, and other respected sites and organizations.
3. The trade-first subtraction method is similar to the traditional column subtraction method.
4. "The math apps by Esa Helttula allow students to practice and reinforce the specific computation strategies taught in class, with as much or as little scaffolding as necessary.
5. In the Everyday Mathematics curriculum the trade-first method is the focus algorithm for subtraction.
6. The user can solve random subtraction problems with small and large numbers.
7. This app can be used to teach and study the trade-first subtraction method.
8. After you solve the operation for each column the correct answer will fly to the right place.
9. This app also does not contain any links to other apps or the web.
10. The numbers are aligned automatically so that you can concentrate on solving the operations for each column.
11. The app is easy to use and it has an intuitive interactive interface with customizable colors and other settings.
或按照以下指南在PC上使用 :
选择你的电脑版本:
软件安装要求:
可直接下载。下载如下：
现在，打开已安装的模拟器应用程序并查找其搜索栏。一旦找到它，请键入 Trade-First Subtraction 在搜索栏并按搜索。点击 Trade-First Subtraction应用程序图标。一个 窗口 Trade-First Subtraction 在Play商店或应用程序商店将打开并且它将在您的模拟器应用程序中显示商店。现在，按下安装按钮并像在iPhone或Android设备上一样，您的应用程序将开始下载。现在我们都完成了。
你会看到一个名为“所有应用程序”的图标。
点击它，它会带你到一个包含所有已安装应用程序的页面。
你应该看到 图标。点击它并开始使用该应用程序。
下载 Trade-First Subtraction 对于Mac OS (Apple)
| 下载 | 开发人员 | 评论 | 评分 |
|---|---|---|---|
| $3.99 对于Mac OS | Esa Helttula | 1 | 5.00 |
在 Windows 11 上设置电脑和下载 Trade-First Subtraction 应用的步骤:
PcMac China 
