Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 559 · 40 questions

The fast method (Casting out nines): Find the nine-check number of each number: add the digits until one digit is left. Do the same sum (× or +) with those digits and shrink the result to one digit too. Shrink the given answer. Different → wrong. Same → it passes the check.

1. 1.Check with nines: 753 + 327 = 1080. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 66 × 83 = 5478. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 562 + 473 = 1034. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 44 × 14 = 616. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 961 + 304 = 1265. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 701 + 132 = 835. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 88 × 18 = 1584. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 440 + 416 = 852. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 278 + 146 = 418. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 92 × 90 = 8280. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 32 × 85 = 2720. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 98 × 99 = 9702. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 83 × 46 = 3817. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 19 × 17 = 323. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 432 + 290 = 718. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 26 × 54 = 1404. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 800 + 224 = 1024. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 19 × 60 = 1139. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 498 + 973 = 1472. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 72 × 17 = 1229. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 79 × 27 = 2133. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 43 × 71 = 3053. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 964 + 729 = 1691. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 316 + 714 = 1032. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 49 × 28 = 1372. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 29 × 79 = 2291. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 766 + 252 = 1026. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 271 + 610 = 881. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 426 + 608 = 1036. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 68 × 89 = 6052. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 17 × 99 = 1683. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 82 × 85 = 6978. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 186 + 879 = 1065. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 65 × 23 = 1495. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 291 + 452 = 743. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 88 × 68 = 5984. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 26 × 57 = 1482. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 49 × 59 = 2891. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 979 + 223 = 1210. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 64 × 45 = 2880. Correct or wrong? (a) correct (b) wrong

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths