Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 271 · 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: 74 × 82 = 6068. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 44 × 22 = 969. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 91 × 12 = 1096. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 364 + 691 = 1055. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 66 × 87 = 5742. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 28 × 99 = 2772. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 863 + 500 = 1363. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 763 + 706 = 1477. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 290 + 499 = 789. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 391 + 427 = 820. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 62 × 72 = 4464. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 72 × 49 = 3532. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 171 + 601 = 770. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 888 + 960 = 1851. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 228 + 285 = 513. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 96 × 13 = 1252. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 959 + 815 = 1779. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 21 × 60 = 1260. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 350 + 591 = 941. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 649 + 544 = 1198. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 80 × 75 = 6006. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 384 + 229 = 621. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 88 × 21 = 1848. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 93 × 30 = 2790. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 171 + 363 = 534. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 62 × 42 = 2606. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 898 + 458 = 1349. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 581 + 283 = 864. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 77 × 13 = 995. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 630 + 643 = 1273. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 65 × 47 = 3055. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 960 + 916 = 1877. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 30 × 55 = 1655. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 91 × 78 = 7096. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 904 + 188 = 1098. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 632 + 537 = 1171. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 54 × 13 = 702. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 92 × 39 = 3588. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 172 + 605 = 777. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 66 × 82 = 5412. Correct or wrong? (a) wrong (b) correct

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