Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 755 · 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: 389 + 147 = 536. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 146 + 438 = 578. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 60 × 38 = 2280. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 53 × 51 = 2711. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 56 × 74 = 4144. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 35 × 19 = 661. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 89 × 82 = 7300. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 32 × 15 = 480. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 845 + 725 = 1562. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 717 + 305 = 1020. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 35 × 68 = 2372. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 82 × 27 = 2214. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 38 × 47 = 1786. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 648 + 963 = 1611. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 25 × 60 = 1497. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 25 × 29 = 729. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 267 + 240 = 512. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 388 + 133 = 521. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 99 × 59 = 5841. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 37 × 52 = 1924. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 191 + 130 = 329. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 413 + 124 = 537. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 65 × 72 = 4680. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 194 + 202 = 403. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 77 × 89 = 6853. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 23 × 49 = 1123. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 89 × 76 = 6764. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 80 × 32 = 2562. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 135 + 948 = 1083. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 711 + 568 = 1279. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 95 × 84 = 7980. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 18 × 94 = 1694. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 37 × 81 = 2997. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 695 + 745 = 1445. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 27 × 83 = 2245. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 36 × 44 = 1584. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 41 × 16 = 656. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 952 + 718 = 1670. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 43 × 26 = 1118. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 160 + 163 = 323. Correct or wrong? (a) wrong (b) correct

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