Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 588 · 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: 623 + 122 = 745. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 719 + 207 = 926. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 50 × 17 = 847. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 31 × 16 = 496. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 370 + 439 = 809. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 31 × 40 = 1240. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 710 + 320 = 1035. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 94 × 15 = 1407. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 730 + 357 = 1079. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 576 + 545 = 1121. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 308 + 187 = 499. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 324 + 908 = 1227. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 29 × 89 = 2589. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 835 + 233 = 1074. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 950 + 299 = 1248. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 48 × 64 = 3065. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 271 + 568 = 839. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 71 × 54 = 3838. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 476 + 345 = 829. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 656 + 147 = 803. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 29 × 21 = 609. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 359 + 732 = 1086. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 56 × 71 = 3982. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 44 × 29 = 1277. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 85 × 59 = 5015. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 77 × 32 = 2464. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 66 × 17 = 1122. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 44 × 88 = 3870. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 44 × 28 = 1232. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 20 × 94 = 1874. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 75 × 77 = 5768. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 206 + 773 = 980. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 41 × 93 = 3813. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 56 × 55 = 3074. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 929 + 853 = 1779. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 30 × 42 = 1260. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 500 + 201 = 693. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 67 × 86 = 5769. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 683 + 675 = 1363. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 636 + 856 = 1484. Correct or wrong? (a) correct (b) wrong

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