Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 808 · 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: 40 × 67 = 2680. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 849 + 196 = 1039. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 700 + 373 = 1067. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 64 × 94 = 6018. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 73 × 40 = 2927. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 747 + 239 = 985. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 86 × 80 = 6880. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 43 × 53 = 2279. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 806 + 945 = 1751. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 97 × 71 = 6883. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 76 × 19 = 1449. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 412 + 154 = 566. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 636 + 975 = 1609. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 207 + 419 = 626. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 39 × 52 = 2035. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 57 × 22 = 1246. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 287 + 801 = 1082. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 27 × 65 = 1754. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 57 × 18 = 1026. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 734 + 758 = 1492. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 18 × 50 = 900. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 34 × 90 = 3060. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 456 + 828 = 1284. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 513 + 709 = 1222. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 57 × 78 = 4446. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 72 × 53 = 3816. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 42 × 83 = 3486. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 941 + 226 = 1164. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 851 + 210 = 1061. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 64 × 53 = 3397. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 875 + 506 = 1381. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 362 + 669 = 1031. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 75 × 54 = 4050. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 807 + 139 = 946. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 643 + 489 = 1132. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 212 + 787 = 995. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 90 × 78 = 7026. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 59 × 34 = 2006. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 279 + 909 = 1188. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 57 × 22 = 1254. Correct or wrong? (a) wrong (b) correct

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