Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 69 · 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: 89 × 27 = 2403. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 89 × 29 = 2581. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 301 + 863 = 1164. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 65 × 32 = 2080. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 629 + 648 = 1270. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 277 + 322 = 599. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 121 + 785 = 899. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 49 × 98 = 4797. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 496 + 379 = 877. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 732 + 916 = 1648. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 50 × 98 = 4900. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 509 + 244 = 753. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 564 + 534 = 1090. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 156 + 285 = 441. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 40 × 18 = 721. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 321 + 869 = 1190. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 771 + 524 = 1295. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 620 + 511 = 1131. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 39 × 41 = 1594. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 227 + 477 = 704. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 29 × 34 = 986. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 418 + 120 = 530. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 86 × 92 = 7908. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 73 × 61 = 4459. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 37 × 94 = 3479. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 21 × 62 = 1302. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 65 × 22 = 1427. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 32 × 58 = 1856. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 535 + 564 = 1098. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 421 + 757 = 1177. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 427 + 828 = 1255. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 628 + 356 = 980. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 43 × 61 = 2623. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 25 × 50 = 1246. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 81 × 13 = 1049. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 682 + 742 = 1424. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 35 × 67 = 2343. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 97 × 95 = 9215. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 539 + 855 = 1399. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 564 + 155 = 719. Correct or wrong? (a) wrong (b) correct

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