Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 697 · 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: 71 × 95 = 6738. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 505 + 480 = 985. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 142 + 199 = 341. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 56 × 43 = 2408. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 627 + 380 = 1007. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 952 + 984 = 1936. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 135 + 926 = 1060. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 539 + 801 = 1339. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 39 × 29 = 1131. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 187 + 454 = 643. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 565 + 536 = 1104. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 27 × 17 = 456. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 51 × 76 = 3873. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 912 + 491 = 1403. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 245 + 475 = 720. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 38 × 31 = 1181. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 66 × 80 = 5280. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 56 × 43 = 2408. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 26 × 66 = 1716. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 86 × 45 = 3870. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 23 × 22 = 506. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 949 + 147 = 1096. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 308 + 497 = 805. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 815 + 413 = 1228. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 431 + 830 = 1261. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 853 + 265 = 1118. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 475 + 271 = 746. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 53 × 13 = 689. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 24 × 28 = 673. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 90 × 31 = 2790. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 150 + 995 = 1146. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 22 × 24 = 528. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 209 + 130 = 338. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 96 × 50 = 4800. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 686 + 409 = 1095. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 914 + 730 = 1644. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 876 + 845 = 1726. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 68 × 64 = 4352. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 189 + 209 = 397. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 22 × 55 = 1210. Correct or wrong? (a) correct (b) wrong

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