ASHLEYANGAT0711GO ASHLEYANGAT0711GO Math Answered Numeracy Activity: Drill on Adding and Subtracting Numbers. Perform the indicated operation. 1. 2 054 + 689-n 2. 5 203 + 1 906 -n 3. 24 218 + 342 -n 4. 3 400 - 712 n 5. 9243 - 1320 =n