Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
3 Cards in this Set
- Front
- Back
|
SIGNED NUMBERS
When adding two numbers of the same sign (-2+-2) |
add the absolute values (2+2=4)
use the common sign in the answer -2+-2=-4 |
|
|
SIGNED NUMBERS
Adding two numbers with different signs -3+1 |
find the DIFFERENCE between the larger absolute value and the smaller absolute value.
Use the sign from the number with the larger absolute value eg -3+1=-2 |
|
|
SIGNED NUMBERS
Subtracting two signed numbers eg. -3-(-2) |
rewrite the number as adding the first number to the opposite of the second number (-3+2)
find the difference between the absolute numbers (smaller from larger) eg. 3-2=1 the answer sign will be determined by the sign of the larger number -3-(-2)=-1 |
