Integer Operations · Targeted Sign Practice

Subtracting a Negative — Sign Practice

Subtracting a negative number is equivalent to adding its positive opposite. The starting number stays unchanged.

The first minus is the subtraction operation. The minus inside the parentheses is the sign of negative 4. This is a rule about subtracting a negative, not a rule that two negative numbers always give a positive result.

Three levels: rewrite, calculate, then mixed signs. Earn 10 correct answers per level. Three misses lead to targeted review and restart only the current level. No timer.