Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 595 · 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: 28 × 57 = 1596. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 658 + 864 = 1518. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 280 + 538 = 818. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 92 × 61 = 5617. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 643 + 311 = 961. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 248 + 976 = 1218. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 23 × 62 = 1418. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 19 × 35 = 673. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 29 × 26 = 751. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 59 × 18 = 1062. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 763 + 781 = 1544. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 43 × 87 = 3742. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 45 × 90 = 4050. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 92 × 96 = 8836. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 962 + 210 = 1176. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 63 × 15 = 945. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 428 + 197 = 625. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 780 + 175 = 953. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 69 × 67 = 4615. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 272 + 319 = 595. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 667 + 601 = 1263. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 305 + 861 = 1166. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 87 × 33 = 2871. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 38 × 57 = 2166. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 44 × 29 = 1276. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 239 + 680 = 919. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 81 × 36 = 2916. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 79 × 65 = 5135. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 787 + 811 = 1598. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 46 × 30 = 1377. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 37 × 24 = 888. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 37 × 28 = 1042. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 43 × 99 = 4265. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 649 + 397 = 1048. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 908 + 640 = 1551. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 621 + 547 = 1168. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 13 × 32 = 416. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 55 × 15 = 824. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 550 + 719 = 1269. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 59 × 63 = 3717. Correct or wrong? (a) correct (b) wrong

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