Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 477 · 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: 90 × 49 = 4411. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 98 × 52 = 5096. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 38 × 23 = 870. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 48 × 39 = 1874. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 95 × 93 = 8834. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 91 × 34 = 3096. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 54 × 82 = 4428. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 953 + 643 = 1596. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 24 × 24 = 578. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 43 × 32 = 1376. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 743 + 177 = 918. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 51 × 18 = 922. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 65 × 26 = 1692. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 914 + 899 = 1813. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 22 × 84 = 1850. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 700 + 580 = 1280. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 213 + 306 = 519. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 49 × 18 = 887. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 21 × 47 = 987. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 135 + 249 = 382. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 67 × 59 = 3953. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 998 + 675 = 1670. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 461 + 686 = 1147. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 989 + 369 = 1351. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 17 × 92 = 1564. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 83 × 79 = 6557. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 43 × 12 = 517. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 15 × 81 = 1209. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 784 + 322 = 1113. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 22 × 98 = 2156. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 524 + 503 = 1027. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 313 + 337 = 650. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 42 × 76 = 3193. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 920 + 947 = 1867. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 211 + 289 = 500. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 76 × 19 = 1444. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 33 × 22 = 726. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 700 + 781 = 1486. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 14 × 40 = 560. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 30 × 84 = 2520. Correct or wrong? (a) wrong (b) correct

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