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The sum of the opposite number of 75 and the absolute value of - 24
The opposite of 75 is - 75, | - 24, | = 24
(-75)+|-24|=-75+24=-51
If the absolute value of A-2 + root (B-3) = 0, then the value of A-B is?
Analysis
∵ absolute value is greater than or equal to 0
∴A-2=0
A=2
B-3=0
B=3
A²-B;=4-3=1
As shown in the figure, please use the absolute value of a [a], the absolute value of B [b] to represent the sum of a and B. figure: (1) 0ab (2) b0a
Picture:
1.0 A B (this is a number axis)
B 0 a (this is a number axis)
First question
a+b=|a|+|b|
Second question
a+b=|a|-|b|
If a > 0, B < 0, and the absolute value of a < the absolute value of B, then a + B () 0, a + B () 0=
a+b
Is the sentence "numbers with opposite signs and equal absolute values are opposite to each other"?
But the opposite is wrong: "opposite numbers are numbers with opposite signs and equal absolute values", because 0 is omitted
Two opposite numbers with different symbols and equal absolute values, one of which is the other?
The opposite number
Two numbers with the same absolute value but different symbols are opposite to each other
Judge right or wrong
That's right
Ratio size - 3 and - 5 - 2.5 and - | - 2.25 | judge that numbers with opposite signs are opposite numbers, numbers with opposite signs and equal absolute values are opposite numbers
The greater the absolute value of a number, the more right its point is on the number axis
The larger the absolute value of a number, the farther its point is from the far point on the number axis
The absolute value of two unequal numbers is not equal
Two numbers with equal absolute values must be equal
-3>-5
-2.5
Two numbers with equal absolute values are opposite to each other, right
Yes
If the sum of two non-zero rational numbers is equal to 0, then what is the absolute value of these two numbers? Sign (), call these two numbers (). This is a question to fill in the blanks
1. The absolute value is: the positive rational number
2. Symbol:+
These two numbers are opposite to each other
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