Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 938 · 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: 182 + 493 = 683. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 759 + 892 = 1646. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 88 × 32 = 2810. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 39 × 67 = 2607. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 85 × 28 = 2378. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 42 × 85 = 3575. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 23 × 60 = 1380. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 16 × 21 = 336. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 763 + 471 = 1229. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 672 + 385 = 1057. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 621 + 381 = 1002. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 37 × 90 = 3330. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 513 + 875 = 1388. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 95 × 78 = 7416. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 74 × 32 = 2364. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 62 × 99 = 6130. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 26 × 54 = 1412. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 94 × 49 = 4606. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 557 + 586 = 1143. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 40 × 42 = 1680. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 707 + 988 = 1695. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 80 × 34 = 2720. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 635 + 257 = 886. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 38 × 15 = 570. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 49 × 39 = 1909. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 328 + 245 = 573. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 41 × 70 = 2878. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 60 × 16 = 960. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 836 + 728 = 1564. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 13 × 60 = 782. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 29 × 14 = 406. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 445 + 439 = 884. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 841 + 663 = 1504. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 34 × 49 = 1663. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 36 × 36 = 1296. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 64 × 48 = 3072. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 903 + 657 = 1557. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 70 × 44 = 3087. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 730 + 960 = 1690. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 90 × 21 = 1890. Correct or wrong? (a) wrong (b) correct

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