subtractions

teaching important points: the laws of the tricks of additions and subtractions.

教学重点和难点重点：简便算法的算理。

simple additions and subtractions can help reduce the risk.

正确地选择食物，会减少罹患疾病的风险。

they didn't make big roster additions or subtractions this summer, but they didn't need to.

今夏他们没有重大引援或减员，但他们也不需要那么做。

BCD number conversion realizes the conversion from binary system to decimal system by consecutive subtractions.

十进制转换模块采用了连减法，实现了二进制数向十进制数的转换；

the addition of those three, without any real subtractions , should translate into a playoff run in portland this coming season.

三位猛将的加入，同时没有任何的减弱，将足以保证下个赛季波特兰的季后赛之路。

Can we use the tricks in subtractions? Let's look at example 3.

、师:在减法中能不能用简便算法 呢 ?试一试.

from research labs around the world, simple additions and subtractions that just might result in a healthier life.

从来自世界各地实验结果表明，通过简单的增加或减少某些成分，就可让你拥有健康的生活和身体。

which yields the value 3. if you want the subtractions performed in the other order, you must use explicit parentheses:

结果为3.如果你想先执行减法，你需要明确使用括号：

the arithmetic expressions could be divided into a set of additions, subtractions, multiplications and divisions. these operations can be concurrently executed at a certain degree.

算术表达式的求值可以分解成一组加法、减法、乘法和除法运算，这些运算在一定程度上是可以并行的。

they generally do well in additions and subtractions of numbers short than 20, but few knew what multiplication or division is.

同学们对20以内数的加减法掌握较熟，而大部分都不知乘除为何物。

you have completed all of the additions and subtractions to the layout form for a project or proposal.

您已经完成了一个或者提议布局表格的添加或者删除工作。

does it allow you to make additions, corrections, subtractions , and other modifications on the fly?

它是否让您作出补充，修改，增减，以及其他修改的飞？

with rational application developer, additions or subtractions from the diagram generate actual code that is synchronized with a file.

利用RationalApplicationDeveloper，我们对图的添加或减少都会生成与该文件同步的实际代码。