Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 793 · 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: 246 + 191 = 439. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 74 × 73 = 5394. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 453 + 467 = 920. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 427 + 868 = 1291. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 682 + 882 = 1572. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 88 × 90 = 7921. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 269 + 580 = 849. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 83 × 71 = 5893. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 675 + 642 = 1320. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 73 × 39 = 2852. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 960 + 264 = 1219. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 788 + 913 = 1701. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 593 + 276 = 873. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 354 + 704 = 1056. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 148 + 233 = 373. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 61 × 44 = 2684. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 638 + 942 = 1580. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 76 × 35 = 2660. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 70 × 17 = 1190. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 417 + 949 = 1366. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 29 × 24 = 696. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 97 × 91 = 8827. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 30 × 42 = 1260. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 40 × 56 = 2248. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 64 × 29 = 1851. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 38 × 33 = 1248. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 69 × 14 = 962. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 58 × 22 = 1280. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 300 + 261 = 561. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 69 × 83 = 5727. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 414 + 185 = 596. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 678 + 556 = 1234. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 45 × 48 = 2160. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 558 + 136 = 694. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 45 × 18 = 810. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 31 × 63 = 1949. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 709 + 719 = 1420. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 730 + 819 = 1545. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 35 × 40 = 1400. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 894 + 126 = 1020. Correct or wrong? (a) correct (b) wrong

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