Multiple choice general knowledge math & puzzles 1000 + 10 + 1000 + 30 + 1000 + 40 + 1000 + 20 = ??? 5000 4500 4100 6000 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Add the numbers in sequence: 1000 + 10 + 1000 + 30 + 1000 + 40 + 1000 + 20. The four 1000s total 4000. The small numbers (10 + 30 + 40 + 20) total 100. So 4000 + 100 = 4100.