1. The problem asks us to find the sum of 827346532 and 342052447. Calculate: $$827346532 + 342052447 = 1169398979$$ 2. Add 72341 to the sum of 54890 and 13812. First find the sum inside the parentheses: $$54890 + 13812 = 68702$$ Now add 72341: $$68702 + 72341 = 141043$$ 3. Find the difference between 785976 and 432265. Calculate: $$785976 - 432265 = 353711$$ 4. Subtrahend is 876634 and minuend is 9005506. Find the remainder. Calculate: $$9005506 - 876634 = 8128872$$ 5. How much is 23801002 greater than 15875786? Calculate the difference: $$23801002 - 15875786 = 7925216$$ 6. Add 85334 and 83421. Then add that total to 65722. First add 85334 and 83421: $$85334 + 83421 = 168755$$ Add to 65722: $$168755 + 65722 = 234477$$ 7. What number is 28875547 less than 35902103? Calculate: $$35902103 - 28875547 = 7026556$$ 8. 1658342 added to 5934756 is what number? Calculate: $$1658342 + 5934756 = 7593098$$ 9. 8839759 diminished by 354232 is what number? Calculate: $$8839759 - 354232 = 8485527$$ 10. The total of 243658437 and 8697845 added to the sum of 67542370 and 34621. Calculate the first sum: $$243658437 + 8697845 = 252356282$$ Calculate the second sum: $$67542370 + 34621 = 67576991$$ Add both sums: $$252356282 + 67576991 = 319933273$$ 11. Reduce 239407030 to 148738109 by subtracting a number. Find that number. Calculate: $$239407030 - 148738109 = 90668921$$