Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 584 · 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: 873 + 694 = 1567. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 895 + 812 = 1707. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 951 + 133 = 1084. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 218 + 914 = 1135. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 274 + 207 = 481. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 68 × 57 = 3876. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 19 × 84 = 1598. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 165 + 646 = 811. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 740 + 204 = 944. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 924 + 548 = 1472. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 20 × 89 = 1780. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 18 × 68 = 1225. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 37 × 35 = 1295. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 158 + 276 = 434. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 60 × 17 = 1020. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 32 × 43 = 1370. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 21 × 71 = 1491. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 39 × 27 = 1053. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 990 + 496 = 1486. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 78 × 55 = 4295. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 62 × 80 = 4954. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 55 × 99 = 5445. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 365 + 363 = 724. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 40 × 42 = 1683. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 954 + 690 = 1644. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 54 × 12 = 648. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 65 × 15 = 975. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 401 + 733 = 1130. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 76 × 75 = 5700. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 82 × 60 = 4919. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 355 + 932 = 1287. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 25 × 75 = 1875. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 755 + 483 = 1241. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 138 + 843 = 981. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 48 × 80 = 3837. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 98 × 22 = 2156. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 38 × 37 = 1401. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 33 × 46 = 1510. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 46 × 87 = 4002. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 26 × 52 = 1352. Correct or wrong? (a) wrong (b) correct

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