Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 259 · 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: 931 + 148 = 1072. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 614 + 214 = 828. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 529 + 607 = 1134. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 12 × 76 = 912. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 162 + 855 = 1011. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 55 × 28 = 1540. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 90 × 68 = 6120. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 77 × 29 = 2226. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 956 + 866 = 1822. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 25 × 78 = 1950. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 35 × 28 = 980. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 649 + 593 = 1242. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 475 + 205 = 680. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 391 + 446 = 844. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 67 × 41 = 2744. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 60 × 44 = 2640. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 68 × 61 = 4148. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 865 + 919 = 1778. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 807 + 345 = 1155. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 168 + 467 = 636. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 95 × 30 = 2852. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 169 + 974 = 1148. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 58 × 41 = 2373. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 292 + 373 = 665. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 16 × 43 = 688. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 626 + 951 = 1578. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 37 × 38 = 1402. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 58 × 16 = 928. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 672 + 153 = 820. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 49 × 32 = 1568. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 42 × 66 = 2772. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 62 × 39 = 2426. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 90 × 32 = 2880. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 60 × 37 = 2219. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 99 × 16 = 1588. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 917 + 820 = 1742. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 636 + 827 = 1467. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 806 + 122 = 928. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 66 × 99 = 6532. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 331 + 485 = 820. Correct or wrong? (a) wrong (b) correct

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