Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 283 · 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: 373 + 588 = 961. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 81 × 59 = 4779. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 91 × 26 = 2363. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 256 + 137 = 398. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 264 + 561 = 831. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 73 × 43 = 3139. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 31 × 49 = 1519. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 76 × 61 = 4630. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 955 + 261 = 1209. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 35 × 21 = 734. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 180 + 393 = 581. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 551 + 572 = 1120. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 949 + 342 = 1291. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 506 + 186 = 686. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 19 × 66 = 1254. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 14 × 54 = 756. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 968 + 745 = 1720. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 67 × 95 = 6368. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 64 × 51 = 3257. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 38 × 95 = 3616. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 62 × 36 = 2232. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 407 + 257 = 664. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 48 × 41 = 1964. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 382 + 893 = 1275. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 27 × 95 = 2565. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 477 + 709 = 1186. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 17 × 32 = 538. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 68 × 19 = 1292. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 17 × 95 = 1615. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 216 + 909 = 1125. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 43 × 31 = 1333. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 943 + 362 = 1306. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 250 + 415 = 668. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 49 × 54 = 2646. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 16 × 30 = 480. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 18 × 61 = 1098. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 68 × 68 = 4624. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 52 × 97 = 5044. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 33 × 79 = 2607. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 76 × 13 = 983. Correct or wrong? (a) correct (b) wrong

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