Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 221 · 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: 32 × 56 = 1799. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 521 + 789 = 1310. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 926 + 459 = 1385. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 274 + 722 = 999. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 14 × 98 = 1372. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 315 + 485 = 800. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 639 + 288 = 927. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 41 × 87 = 3567. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 123 + 618 = 741. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 61 × 96 = 5860. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 746 + 148 = 892. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 59 × 83 = 4897. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 81 × 77 = 6237. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 72 × 73 = 5254. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 14 × 46 = 644. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 889 + 529 = 1418. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 25 × 72 = 1806. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 32 × 38 = 1221. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 61 × 26 = 1590. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 36 × 14 = 505. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 47 × 96 = 4512. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 17 × 94 = 1598. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 185 + 224 = 413. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 941 + 671 = 1616. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 76 × 57 = 4332. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 709 + 623 = 1332. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 72 × 66 = 4760. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 16 × 87 = 1392. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 988 + 906 = 1894. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 440 + 377 = 817. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 77 × 44 = 3384. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 910 + 433 = 1343. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 73 × 19 = 1387. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 21 × 52 = 1092. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 913 + 860 = 1774. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 512 + 336 = 849. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 33 × 38 = 1254. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 598 + 167 = 765. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 51 × 56 = 2849. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 83 × 81 = 6723. Correct or wrong? (a) wrong (b) correct

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