Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 690 · 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: 450 + 655 = 1112. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 62 × 31 = 1920. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 583 + 418 = 1009. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 505 + 979 = 1484. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 93 × 23 = 2139. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 88 × 32 = 2816. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 727 + 421 = 1143. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 50 × 91 = 4550. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 34 × 57 = 1938. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 759 + 244 = 1003. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 29 × 43 = 1247. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 89 × 82 = 7304. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 508 + 268 = 784. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 599 + 518 = 1117. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 504 + 366 = 870. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 91 × 34 = 3094. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 774 + 696 = 1477. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 22 × 36 = 792. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 148 + 921 = 1069. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 43 × 75 = 3225. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 58 × 50 = 2900. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 59 × 20 = 1180. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 96 × 57 = 5466. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 94 × 68 = 6390. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 12 × 93 = 1116. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 421 + 441 = 859. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 716 + 253 = 969. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 21 × 71 = 1491. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 323 + 767 = 1090. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 59 × 26 = 1539. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 81 × 50 = 4050. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 171 + 858 = 1034. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 43 × 96 = 4129. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 96 × 71 = 6812. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 34 × 79 = 2686. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 728 + 346 = 1074. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 59 × 62 = 3652. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 592 + 274 = 866. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 77 × 80 = 6152. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 66 × 83 = 5486. Correct or wrong? (a) correct (b) wrong

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