Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 812 · 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: 179 + 560 = 739. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 573 + 959 = 1539. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 32 × 35 = 1124. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 578 + 288 = 866. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 29 × 44 = 1276. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 38 × 16 = 600. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 59 × 49 = 2891. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 17 × 12 = 209. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 179 + 614 = 793. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 64 × 69 = 4416. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 364 + 236 = 600. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 89 × 50 = 4450. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 468 + 778 = 1246. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 747 + 428 = 1177. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 56 × 96 = 5376. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 73 × 57 = 4161. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 86 × 38 = 3263. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 28 × 84 = 2354. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 22 × 79 = 1738. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 305 + 126 = 437. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 64 × 69 = 4413. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 30 × 98 = 2940. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 30 × 98 = 2940. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 72 × 15 = 1080. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 81 × 25 = 2018. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 151 + 126 = 277. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 171 + 892 = 1063. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 133 + 302 = 433. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 62 × 19 = 1174. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 827 + 136 = 966. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 26 × 71 = 1838. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 67 × 37 = 2479. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 38 × 80 = 3036. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 410 + 854 = 1256. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 24 × 29 = 696. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 695 + 463 = 1158. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 280 + 632 = 912. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 80 × 71 = 5680. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 66 × 99 = 6534. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 76 × 80 = 6072. Correct or wrong? (a) correct (b) wrong

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