Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 669 · 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: 333 + 791 = 1116. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 23 × 32 = 736. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 549 + 953 = 1499. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 250 + 587 = 829. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 73 × 50 = 3648. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 91 × 83 = 7549. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 889 + 788 = 1674. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 73 × 41 = 2991. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 31 × 60 = 1860. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 870 + 897 = 1772. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 558 + 882 = 1440. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 13 × 46 = 594. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 88 × 18 = 1584. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 92 × 86 = 7905. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 646 + 832 = 1484. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 58 × 80 = 4640. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 162 + 450 = 612. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 29 × 89 = 2581. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 289 + 492 = 781. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 462 + 682 = 1151. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 24 × 59 = 1420. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 167 + 338 = 505. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 978 + 381 = 1359. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 263 + 276 = 539. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 477 + 603 = 1080. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 244 + 162 = 409. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 459 + 784 = 1243. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 45 × 42 = 1890. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 356 + 173 = 529. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 80 × 24 = 1920. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 92 × 31 = 2851. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 24 × 60 = 1439. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 69 × 99 = 6831. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 21 × 51 = 1071. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 151 + 913 = 1068. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 82 × 38 = 3109. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 72 × 76 = 5475. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 352 + 736 = 1088. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 33 × 41 = 1353. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 31 × 47 = 1456. Correct or wrong? (a) correct (b) wrong

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