Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 345 · 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: 406 + 526 = 932. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 398 + 997 = 1395. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 13 × 78 = 1011. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 52 × 52 = 2704. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 73 × 45 = 3285. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 350 + 582 = 933. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 33 × 23 = 759. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 23 × 22 = 506. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 25 × 89 = 2219. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 202 + 274 = 476. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 88 × 81 = 7132. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 618 + 926 = 1544. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 253 + 488 = 735. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 32 × 88 = 2816. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 32 × 76 = 2427. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 74 × 97 = 7178. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 822 + 159 = 981. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 783 + 725 = 1500. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 922 + 645 = 1574. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 978 + 756 = 1734. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 71 × 46 = 3266. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 83 × 40 = 3318. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 308 + 204 = 508. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 72 × 57 = 4097. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 39 × 21 = 819. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 408 + 316 = 720. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 71 × 46 = 3260. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 45 × 57 = 2565. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 344 + 201 = 545. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 244 + 370 = 614. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 267 + 722 = 982. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 515 + 376 = 891. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 33 × 81 = 2666. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 568 + 732 = 1300. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 62 × 47 = 2914. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 809 + 853 = 1662. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 79 × 98 = 7742. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 314 + 397 = 711. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 87 × 19 = 1653. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 17 × 93 = 1581. Correct or wrong? (a) correct (b) wrong

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