Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 424 · 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: 577 + 246 = 824. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 31 × 48 = 1486. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 49 × 35 = 1715. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 300 + 187 = 485. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 26 × 29 = 754. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 252 + 472 = 724. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 229 + 335 = 564. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 336 + 355 = 695. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 48 × 49 = 2352. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 85 × 63 = 5355. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 503 + 952 = 1452. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 411 + 381 = 793. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 985 + 133 = 1118. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 79 × 90 = 7110. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 242 + 549 = 794. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 43 × 51 = 2193. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 267 + 937 = 1204. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 89 × 16 = 1431. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 32 × 76 = 2431. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 95 × 81 = 7695. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 245 + 479 = 725. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 42 × 40 = 1680. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 198 + 454 = 656. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 34 × 34 = 1156. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 80 × 26 = 2080. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 772 + 542 = 1314. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 62 × 82 = 5089. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 340 + 857 = 1197. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 520 + 707 = 1230. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 37 × 85 = 3151. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 299 + 926 = 1221. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 984 + 644 = 1627. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 672 + 723 = 1395. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 797 + 428 = 1233. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 529 + 323 = 854. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 15 × 41 = 615. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 834 + 547 = 1375. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 513 + 309 = 817. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 36 × 61 = 2196. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 380 + 993 = 1373. Correct or wrong? (a) wrong (b) correct

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