Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 44 · 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: 67 × 22 = 1468. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 703 + 313 = 1016. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 75 × 60 = 4500. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 314 + 207 = 516. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 26 × 20 = 520. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 990 + 747 = 1737. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 63 × 27 = 1693. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 52 × 58 = 3009. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 533 + 899 = 1432. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 79 × 70 = 5530. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 473 + 468 = 941. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 775 + 356 = 1131. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 485 + 172 = 652. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 12 × 44 = 528. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 257 + 359 = 617. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 387 + 469 = 853. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 92 × 21 = 1932. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 790 + 732 = 1525. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 25 × 87 = 2168. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 948 + 459 = 1411. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 21 × 87 = 1827. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 37 × 86 = 3182. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 94 × 44 = 4142. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 56 × 72 = 4028. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 72 × 12 = 869. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 884 + 780 = 1664. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 87 × 60 = 5220. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 89 × 78 = 6936. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 81 × 34 = 2762. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 85 × 49 = 4165. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 762 + 481 = 1249. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 91 × 42 = 3815. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 884 + 202 = 1086. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 18 × 51 = 915. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 71 × 47 = 3335. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 700 + 613 = 1306. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 39 × 23 = 898. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 662 + 881 = 1544. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 13 × 76 = 988. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 487 + 371 = 858. Correct or wrong? (a) wrong (b) correct

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