RAYMARKLEDDAIN RAYMARKLEDDAIN Math Answered Directions: Perform the open1. 12 + 342. (+15) + (+11)3. (-10) + (-22)4. 20165. (+23) - (+5)6. (+19)-(-4)7. (+10) (+2)8. (-20) (-7)9. (+11) (+2)(-3)10. 40 + 811. (+25) + (+5)12.(-16)+(-4)