Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 731 · 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: 728 + 370 = 1098. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 47 × 43 = 2021. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 346 + 583 = 929. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 83 × 55 = 4570. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 85 × 57 = 4846. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 70 × 43 = 3010. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 254 + 912 = 1174. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 19 × 82 = 1558. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 78 × 29 = 2259. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 155 + 197 = 352. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 732 + 955 = 1687. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 38 × 57 = 2166. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 76 × 88 = 6688. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 568 + 314 = 874. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 191 + 533 = 727. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 22 × 30 = 654. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 34 × 95 = 3225. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 69 × 58 = 4005. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 12 × 84 = 1008. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 46 × 85 = 3904. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 86 × 49 = 4212. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 704 + 679 = 1383. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 21 × 17 = 357. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 65 × 98 = 6370. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 578 + 147 = 725. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 912 + 901 = 1813. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 966 + 943 = 1915. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 196 + 344 = 544. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 50 × 69 = 3457. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 14 × 83 = 1169. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 13 × 76 = 995. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 59 × 32 = 1886. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 222 + 466 = 694. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 312 + 788 = 1104. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 272 + 767 = 1041. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 172 + 962 = 1134. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 712 + 171 = 875. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 308 + 230 = 541. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 46 × 61 = 2802. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 91 × 38 = 3458. Correct or wrong? (a) wrong (b) correct

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