2个正整数的乘积是多少?
代数是处理数字和符号的数学分支。代数方程由常数、变量和变量系数组成,与各种数学运算的手段相关联。代数是通过一些数学运算进行的,例如求和、减法、乘法和除法。
正数和负数
数轴上表示的数值可以确定为正数或负数。由于任何小于零的标准数字都被视为带有减号 (-) 的负数。例如:-5、-7、-10 等。而任何大于零的标准数字都被视为带有加号 (+) 的正数。例如:+5、+7、+10 等。
签署规则
为加法、减法、乘法和除法定义了符号规则。这些规则在下面提到了各种符号编号。例如,正数加正数或负数等。我们来看看这些,
- 添加
加法是组合数字的操作。使用加号“+”表示。
- (Positive number) + (Positive number) = Positive number [(+) + (+) = (+)]
- (Negative number) + (Negative number) = Negative number [(-) + (-) = (-)]
将两个不同符号的数相加时的运算结果以运算中涉及的较大项为基础。
- 如果较大值的符号带有正号 (+),则结果也将带有正号。
- 如果较大值的符号带有负号 (-),则结果将带有负号。
- (Positive number) + (Negative number) = Positive number [(+) + (-) = (+)]
- (Negative number) + (Positive number) = Negative number [(-) + (+) = (-)]
- 减法
减法是从集合中删除值的操作。使用减号“-”表示。在减法运算中,需要减法的数字的符号发生变化。并且,然后遵循相同的符号加法规则。例如,(10) – (+8) = (10) + (-8) = 2。这里,+8 变为 -8,然后遵循加法的符号规则。
- (Positive number) + (Positive number) = Positive number [(+) + (+) = (+)]
- (Negative number) + (Negative number) = Negative number [(-) + (-) = (-)]
将两个不同符号的数相加时的运算结果以运算中涉及的较大项为基础。
- 如果较大值的符号带有正号 (+),则结果也将带有正号。
- 如果较大值的符号带有负号 (-),则结果将带有负号。
- (Positive number) + (Negative number) = Positive number [(+) + (-) = (+)]
- (Negative number) + (Positive number) = Negative number [(-) + (+) = (-)]
- 对于乘法
乘法是一种运算,其中可以将数字添加到某个时间。它由乘号“x”表示。
在处理具有相同符号的数字时,结果总是积极的。
- (Positive number) × (Positive number) = Positive number [(+) × (+) = (+)]
- (Negative number) × (Negative number) = Positive number [(-) × (-) = (+)]
在处理具有相同符号的数字时,结果总是负数。
- (Positive number) × (Negative number) = Negative number [(+) × (-) = (-)]
- (Negative number) × (Positive number) = Negative number [(-) × (+) = (-)]
- 对于除法
除法是一种将大量数字集合拆分为较小值的操作。用除号“÷”表示。除法也遵循与乘法相同的符号规则。如果符号相同,则除以正号。并且,如果符号不同,则划分并放置负号。
在处理具有相同符号的数字时,结果总是积极的。
- (Positive number) ÷ (Positive number) = Positive number [(+) ÷ (+) = (+)]
- (Negative number) ÷ (Negative number) = Positive number [(-) ÷ (-) = (+)]
在处理具有相同符号的数字时,结果总是负数。
- (Positive number) ÷ (Negative number) = Negative number [(+) ÷ (-) = (-)]
- (Negative number) ÷ (Positive number) = Negative number [(-) ÷ (+) = (-)]
2个正整数的乘积是多少?
回答:
While dealing with two positive signs of the numbers the result would be positive according to the sign rule. While multiplying or dividing two positive numbers, firstly we have to simplify the numbers and then look into the signs carried by them. Once, the numerical value of the two numbers having the same positive signs is determined, the sign rule can be applied. That is,
Positive (+) × Positive (+) = Positive (+)
示例问题
问题1:2个底片有什么作用?
回答:
While dealing with two negative signs of the numbers the result would be positive according to the sign rule.
(negative number) × (negative number) = positive number
问题2:正数和负数有什么关系?
回答:
While dealing with a negative sign and a positive sign of the numbers the result would be negative according to the sign rule.
(positive number) × (negative number) = negative number
问题 3:什么是 5 × 15?
回答:
5 × 15 equals 75. As both numbers are positive numbers the result is also positive as per the sign rule.
问题4:12÷2是什么?
回答:
12 ÷ 2 equals 6. As both the numbers in the division are positive the result is also positive as per the sign rule.
问题 5:-10 ÷ 5 是多少?
回答:
-10 ÷ 5 equals -2. As the numbers in the division are one positive and one negative the result will be negative as per the sign rule.
问题 6:什么是 2 x 4?
回答:
2 × 4 equals 8. As both, the numbers in the multiplication are positive the result is also positive as per the sign rule.