Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 896 · 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: 182 + 315 = 497. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 89 × 53 = 4709. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 27 × 63 = 1701. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 33 × 98 = 3234. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 512 + 570 = 1085. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 211 + 671 = 882. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 17 × 45 = 765. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 252 + 323 = 575. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 262 + 852 = 1118. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 34 × 72 = 2452. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 71 × 33 = 2343. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 884 + 273 = 1165. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 13 × 20 = 260. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 515 + 779 = 1291. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 99 × 39 = 3861. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 442 + 624 = 1066. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 86 × 91 = 7826. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 20 × 16 = 320. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 873 + 822 = 1694. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 830 + 710 = 1540. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 68 × 43 = 2921. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 685 + 633 = 1318. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 806 + 481 = 1287. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 740 + 392 = 1127. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 95 × 86 = 8167. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 55 × 24 = 1320. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 51 × 66 = 3370. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 35 × 61 = 2135. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 76 × 33 = 2502. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 555 + 254 = 809. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 45 × 93 = 4179. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 55 × 44 = 2419. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 754 + 315 = 1075. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 792 + 141 = 932. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 80 × 51 = 4081. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 98 × 28 = 2744. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 468 + 683 = 1151. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 49 × 59 = 2899. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 301 + 164 = 465. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 232 + 405 = 629. Correct or wrong? (a) wrong (b) correct

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