Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 835 · 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: 321 + 255 = 576. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 29 × 34 = 986. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 341 + 122 = 460. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 24 × 90 = 2160. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 479 + 958 = 1437. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 744 + 483 = 1227. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 59 × 36 = 2124. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 17 × 57 = 969. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 959 + 900 = 1859. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 95 × 18 = 1710. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 994 + 324 = 1322. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 42 × 52 = 2184. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 74 × 84 = 6219. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 98 × 35 = 3430. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 507 + 656 = 1160. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 51 × 57 = 2907. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 58 × 60 = 3478. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 48 × 48 = 2304. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 179 + 558 = 737. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 78 × 84 = 6553. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 32 × 68 = 2176. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 31 × 62 = 1922. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 192 + 194 = 391. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 349 + 520 = 869. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 994 + 921 = 1911. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 527 + 524 = 1051. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 39 × 41 = 1603. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 74 × 57 = 4218. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 91 × 53 = 4824. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 559 + 271 = 835. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 507 + 887 = 1394. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 948 + 182 = 1130. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 46 × 56 = 2575. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 81 × 29 = 2349. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 382 + 279 = 664. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 89 × 93 = 8277. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 44 × 72 = 3168. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 654 + 444 = 1098. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 704 + 275 = 982. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 83 × 60 = 4982. Correct or wrong? (a) correct (b) wrong

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