Absolute value
Find how far a number is from zero, ignoring its sign.
The absolute value of −7 is 7, and the absolute value of 7 is also 7. It tells you how far a number is from zero.
Classic Graphing 84
Start on the main screen: Press 2nd then mode (QUIT) to get back to the home screen. Pressing clear on a menu also backs out of it.
Open the MATH menu, move right to NUM and choose 1, abs(.
math▶1Type the negative number, close the bracket and press enter.
(−)7)enter
You should seeabs(⁻7) 7
Classic Graphing 84 key reference · Classic Graphing 84 manual
Classic Scientific 30
Start on the main screen: Press 2nd then mode (QUIT) to leave any menu or screen and return to the calculation screen.
Press 2nd then the x⁻¹ key to get abs. Type the negative number and press enter.
2ndabsx⁻¹(−)7enter
You should see|-7| 7
Classic Scientific 30 key reference · Classic Scientific 30 manual
Natural Scientific 991
Start on the main screen: Press MENU, then 1 (Calculate) to return to the main calculation screen. AC clears the line you are on.
Press SHIFT then hyp for Abs, then type the negative number.
SHIFTAbshyp(−)7Press =.
=
You should see|-7| 7
Natural Scientific 991 key reference · Natural Scientific 991 manual
RPN Scientific 15
Start on the main screen: There is no menu to leave. Press the back arrow to clear a number you are typing, or CLx (g then back arrow) to clear the X register.
Key in 7 and make it negative with CHS.
7CHSPress g then CHS (ABS) to remove the sign.
gABSCHS
You should see7.0000
Tips
- Absolute value of a difference, such as |3 − 10|, is a quick way to find the distance between two numbers.