Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 489 · 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: 64 × 30 = 1920. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 76 × 84 = 6388. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 39 × 37 = 1443. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 250 + 415 = 663. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 735 + 505 = 1240. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 457 + 158 = 609. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 980 + 735 = 1712. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 96 × 19 = 1824. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 97 × 65 = 6305. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 543 + 399 = 943. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 903 + 592 = 1498. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 85 × 89 = 7565. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 76 × 22 = 1670. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 98 × 14 = 1372. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 21 × 74 = 1551. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 59 × 54 = 3186. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 350 + 842 = 1192. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 324 + 908 = 1231. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 75 × 92 = 6900. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 30 × 82 = 2454. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 53 × 68 = 3604. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 79 × 74 = 5846. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 16 × 73 = 1168. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 94 × 13 = 1222. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 76 × 60 = 4560. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 37 × 47 = 1744. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 649 + 370 = 1019. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 251 + 421 = 672. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 649 + 349 = 992. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 580 + 415 = 1000. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 178 + 245 = 423. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 14 × 23 = 322. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 46 × 94 = 4324. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 42 × 20 = 842. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 553 + 720 = 1274. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 294 + 274 = 566. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 50 × 26 = 1298. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 46 × 26 = 1196. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 70 × 43 = 3004. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 51 × 42 = 2139. Correct or wrong? (a) wrong (b) correct

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