Mathematics - Integers - Adding and subtracting integers - Integer Operations Drill

20 integer addition/subtraction problems. Mix: positive+negative, negative+negative, positive-negative, negative-negative (double negative). Examples: -8+3, -5+(-7), 4-9, -3-(-6), 12+(-15), -20-(-5). Show number line animation for wrong answers. Track which rule type (same signs, different signs, do