Math 7: The Number System (Adding and Subtracting Rational Numbers
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Integers
A whole number. A number that IS NOT a fraction.
DSD
Different Signs Difference SUBTRACT Take sign of greater number.
Inverse Property of Addition
Every number has an ADDITIVE INVERSE (Opposite). The sum of a number and its additive inverse is ZERO.
Absolute Value
How far a number is from zero
KCC
Keep Change Change Change SUBTRACTION to ADDITION Change 2nd # to its opposite, then follow rules of addition
SSS
Same Signs Sum ADD Take the sign of a greater number.
Common Denominator
When two or more fraction are common, or the same.
