Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 465 · 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: 914 + 471 = 1383. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 548 + 701 = 1249. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 26 × 87 = 2257. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 74 × 33 = 2434. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 90 × 58 = 5220. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 45 × 33 = 1485. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 71 × 22 = 1565. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 95 × 40 = 3802. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 15 × 68 = 1020. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 12 × 49 = 586. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 197 + 427 = 621. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 400 + 482 = 888. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 735 + 694 = 1431. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 40 × 85 = 3393. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 320 + 736 = 1064. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 92 × 48 = 4416. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 756 + 950 = 1708. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 494 + 238 = 738. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 20 × 69 = 1378. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 39 × 23 = 903. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 924 + 851 = 1775. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 378 + 822 = 1203. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 85 × 24 = 2045. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 149 + 950 = 1103. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 38 × 14 = 530. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 81 × 50 = 4050. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 92 × 69 = 6353. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 37 × 88 = 3260. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 15 × 92 = 1376. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 269 + 157 = 418. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 98 × 50 = 4907. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 48 × 62 = 2974. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 306 + 345 = 651. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 943 + 175 = 1118. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 687 + 613 = 1308. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 34 × 20 = 683. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 15 × 25 = 375. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 88 × 79 = 6948. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 27 × 32 = 864. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 79 × 41 = 3239. Correct or wrong? (a) correct (b) wrong

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