Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 137 · 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: 95 × 61 = 5795. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 921 + 296 = 1217. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 40 × 51 = 2040. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 242 + 675 = 917. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 78 × 18 = 1404. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 50 × 19 = 945. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 631 + 722 = 1353. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 29 × 62 = 1798. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 52 × 34 = 1773. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 17 × 57 = 974. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 819 + 545 = 1364. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 82 × 82 = 6724. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 99 × 24 = 2376. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 50 × 97 = 4850. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 400 + 545 = 953. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 70 × 90 = 6300. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 14 × 20 = 282. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 701 + 902 = 1603. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 189 + 142 = 331. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 281 + 215 = 496. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 35 × 12 = 426. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 59 × 29 = 1711. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 71 × 24 = 1704. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 318 + 183 = 501. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 26 × 80 = 2080. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 57 × 67 = 3819. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 423 + 357 = 772. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 349 + 322 = 668. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 431 + 256 = 687. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 852 + 135 = 987. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 12 × 13 = 156. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 179 + 242 = 429. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 130 + 479 = 609. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 23 × 97 = 2233. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 27 × 43 = 1161. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 23 × 45 = 1042. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 38 × 53 = 2014. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 256 + 330 = 584. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 35 × 51 = 1790. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 32 × 17 = 544. Correct or wrong? (a) wrong (b) correct

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