Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 318 · 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: 27 × 63 = 1701. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 80 × 36 = 2880. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 41 × 98 = 4022. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 66 × 43 = 2833. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 14 × 81 = 1134. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 39 × 42 = 1645. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 46 × 78 = 3588. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 29 × 95 = 2755. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 585 + 151 = 733. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 63 × 65 = 4095. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 56 × 23 = 1281. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 27 × 32 = 864. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 232 + 603 = 835. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 856 + 942 = 1795. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 14 × 46 = 644. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 98 × 93 = 9114. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 14 × 88 = 1232. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 40 × 88 = 3520. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 47 × 52 = 2446. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 76 × 73 = 5547. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 795 + 430 = 1225. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 696 + 357 = 1061. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 158 + 537 = 695. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 502 + 215 = 717. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 15 × 43 = 645. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 22 × 92 = 2024. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 51 × 21 = 1071. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 37 × 86 = 3183. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 77 × 87 = 6705. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 778 + 663 = 1441. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 596 + 454 = 1058. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 908 + 959 = 1870. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 21 × 66 = 1386. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 867 + 413 = 1286. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 60 × 57 = 3420. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 184 + 169 = 347. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 31 × 92 = 2852. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 61 × 42 = 2562. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 40 × 76 = 3040. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 86 × 87 = 7483. Correct or wrong? (a) correct (b) wrong

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