Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 995 · 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: 65 × 61 = 3970. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 97 × 89 = 8634. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 38 × 75 = 2850. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 897 + 440 = 1335. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 447 + 185 = 632. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 37 × 39 = 1439. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 66 × 90 = 5940. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 85 × 13 = 1102. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 857 + 520 = 1371. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 50 × 74 = 3700. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 62 × 22 = 1364. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 53 × 21 = 1114. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 73 × 30 = 2190. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 19 × 36 = 684. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 427 + 843 = 1270. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 50 × 71 = 3550. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 51 × 89 = 4543. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 430 + 854 = 1284. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 88 × 39 = 3432. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 46 × 85 = 3915. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 36 × 12 = 436. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 85 × 84 = 7135. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 932 + 315 = 1244. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 997 + 283 = 1280. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 519 + 943 = 1462. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 152 + 940 = 1093. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 798 + 635 = 1433. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 36 × 60 = 2160. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 69 × 84 = 5804. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 62 × 46 = 2847. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 593 + 596 = 1192. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 645 + 193 = 838. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 72 × 24 = 1729. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 560 + 997 = 1551. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 68 × 13 = 884. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 281 + 843 = 1130. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 505 + 203 = 708. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 37 × 12 = 444. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 759 + 892 = 1654. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 894 + 437 = 1327. Correct or wrong? (a) wrong (b) correct

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