Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 86 · 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: 763 + 503 = 1265. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 49 × 69 = 3373. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 56 × 19 = 1062. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 65 × 81 = 5265. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 38 × 74 = 2812. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 950 + 367 = 1311. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 40 × 36 = 1440. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 408 + 359 = 775. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 29 × 28 = 804. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 975 + 967 = 1942. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 679 + 340 = 1011. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 47 × 48 = 2250. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 31 × 64 = 1985. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 518 + 652 = 1170. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 770 + 615 = 1385. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 98 × 50 = 4900. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 370 + 334 = 706. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 856 + 289 = 1145. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 81 × 47 = 3807. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 36 × 88 = 3161. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 77 × 33 = 2541. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 26 × 43 = 1118. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 56 × 13 = 725. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 60 × 36 = 2162. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 36 × 24 = 864. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 683 + 405 = 1086. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 907 + 458 = 1365. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 602 + 690 = 1292. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 578 + 319 = 897. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 440 + 275 = 715. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 92 × 27 = 2484. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 972 + 669 = 1641. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 18 × 34 = 612. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 24 × 17 = 410. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 84 × 40 = 3360. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 93 × 37 = 3441. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 850 + 501 = 1344. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 31 × 31 = 961. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 82 × 55 = 4510. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 799 + 442 = 1234. Correct or wrong? (a) wrong (b) correct

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