Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 306 · 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: 672 + 932 = 1596. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 159 + 134 = 293. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 46 × 48 = 2204. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 70 × 82 = 5740. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 91 × 70 = 6370. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 85 × 81 = 6885. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 911 + 266 = 1177. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 27 × 35 = 937. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 90 × 83 = 7470. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 55 × 90 = 4958. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 33 × 59 = 1947. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 536 + 992 = 1523. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 756 + 180 = 936. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 52 × 82 = 4258. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 579 + 211 = 785. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 308 + 179 = 490. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 95 × 66 = 6269. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 42 × 91 = 3822. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 85 × 62 = 5270. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 235 + 126 = 361. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 812 + 868 = 1680. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 368 + 959 = 1327. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 71 × 64 = 4544. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 29 × 61 = 1769. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 94 × 36 = 3379. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 66 × 33 = 2183. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 54 × 26 = 1404. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 309 + 874 = 1183. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 35 × 28 = 980. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 57 × 21 = 1197. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 125 + 950 = 1075. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 237 + 410 = 645. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 481 + 340 = 821. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 23 × 59 = 1359. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 609 + 374 = 989. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 32 × 12 = 384. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 80 × 69 = 5520. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 51 × 21 = 1071. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 50 × 23 = 1150. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 75 × 96 = 7198. Correct or wrong? (a) correct (b) wrong

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