Adding and Subtracting Integers Flashcards

Grade 7 · Math · Flashcards

Key terms and rules for adding and subtracting integers in 7th grade math.

Flashcards

Integer: Any whole number, its negative, or zero: ..., -3, -2, -1, 0, 1, 2, 3, ...
Absolute value: The distance a number is from zero; always zero or positive. |−7| = 7
Additive inverse: The opposite of a number. The additive inverse of 5 is -5, and 5 + (-5) = 0
KCC Rule: Keep the first number, Change subtraction to addition, Change the sign of the second number
Adding integers with the same sign: Add the absolute values and keep the common sign. Example: (-4) + (-3) = -7
Adding integers with different signs: Subtract the smaller absolute value from the larger; use the sign of the number with the larger absolute value
Positive integer: A whole number greater than zero, found to the right of zero on a number line
Negative integer: A whole number less than zero, found to the left of zero on a number line
Zero pair: A positive and negative number that have the same absolute value; they sum to zero. Example: 8 + (-8) = 0