Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 42 · 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: 153 + 327 = 479. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 88 × 37 = 3256. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 782 + 457 = 1236. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 814 + 953 = 1767. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 92 × 67 = 6158. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 88 × 50 = 4395. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 21 × 82 = 1722. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 72 × 78 = 5614. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 29 × 46 = 1334. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 837 + 723 = 1559. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 67 × 34 = 2282. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 702 + 149 = 851. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 49 × 33 = 1614. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 127 + 472 = 603. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 445 + 167 = 618. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 78 × 59 = 4606. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 26 × 87 = 2262. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 59 × 69 = 4072. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 265 + 519 = 784. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 259 + 987 = 1243. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 92 × 59 = 5436. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 35 × 64 = 2233. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 298 + 451 = 749. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 47 × 42 = 1977. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 238 + 175 = 413. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 27 × 28 = 757. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 66 × 26 = 1714. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 44 × 41 = 1804. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 78 × 54 = 4212. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 618 + 910 = 1528. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 867 + 834 = 1703. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 682 + 311 = 992. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 12 × 79 = 943. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 188 + 442 = 634. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 407 + 316 = 719. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 23 × 15 = 341. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 92 × 27 = 2484. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 121 + 950 = 1073. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 60 × 39 = 2340. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 230 + 557 = 787. Correct or wrong? (a) wrong (b) correct

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