Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 969 · 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 + 302 = 455. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 305 + 900 = 1205. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 579 + 984 = 1567. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 210 + 278 = 487. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 288 + 133 = 419. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 12 × 31 = 375. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 326 + 498 = 817. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 465 + 982 = 1447. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 631 + 616 = 1247. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 548 + 375 = 923. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 12 × 98 = 1175. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 720 + 162 = 882. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 62 × 93 = 5773. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 37 × 94 = 3479. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 32 × 99 = 3168. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 37 × 73 = 2701. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 43 × 29 = 1250. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 97 × 22 = 2134. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 37 × 39 = 1447. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 47 × 95 = 4467. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 231 + 242 = 473. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 14 × 78 = 1092. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 838 + 513 = 1351. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 74 × 25 = 1850. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 83 × 54 = 4482. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 32 × 89 = 2855. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 653 + 328 = 978. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 335 + 999 = 1334. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 151 + 316 = 467. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 70 × 65 = 4550. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 35 × 55 = 1925. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 873 + 499 = 1366. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 17 × 73 = 1243. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 29 × 69 = 1996. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 75 × 36 = 2700. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 190 + 331 = 517. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 89 × 98 = 8726. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 454 + 271 = 725. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 46 × 33 = 1518. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 439 + 216 = 663. Correct or wrong? (a) correct (b) wrong

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