Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 777 · 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: 98 × 14 = 1369. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 31 × 45 = 1395. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 76 × 53 = 4023. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 35 × 71 = 2488. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 273 + 952 = 1225. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 57 × 86 = 4902. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 44 × 69 = 3036. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 72 × 55 = 3960. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 83 × 65 = 5396. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 37 × 68 = 2510. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 438 + 602 = 1040. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 684 + 512 = 1196. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 98 × 33 = 3232. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 856 + 727 = 1583. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 80 × 55 = 4404. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 18 × 80 = 1440. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 269 + 513 = 774. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 152 + 274 = 426. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 371 + 948 = 1317. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 29 × 22 = 634. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 31 × 47 = 1457. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 316 + 326 = 642. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 756 + 656 = 1411. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 49 × 58 = 2842. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 86 × 96 = 8256. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 768 + 294 = 1062. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 57 × 92 = 5244. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 68 × 89 = 6047. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 49 × 55 = 2695. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 840 + 195 = 1035. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 89 × 41 = 3649. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 725 + 237 = 963. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 432 + 879 = 1311. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 151 + 970 = 1125. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 855 + 171 = 1028. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 454 + 572 = 1028. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 22 × 91 = 2002. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 723 + 813 = 1536. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 369 + 135 = 500. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 97 × 71 = 6887. Correct or wrong? (a) correct (b) wrong

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